Sample temperature control assembly and vibration sample magnetometer

Abstract

The utility model provides a sample temperature control assembly, which comprises a variable temperature cavity and a moving assembly, the upper side of the variable temperature cavity is provided with an opening for a measured object to enter and exit, the moving assembly drives the variable temperature cavity to move at different heights, and the height of the variable temperature cavity is adjusted through the moving assembly, so that the measured object can be conveniently switched between the inner side and the outer side of a cavity body of the variable temperature cavity. The environment of the tested object is convenient to adjust, and the tested object is convenient to replace. The utility model further provides a vibration sample magnetometer which comprises an excitation assembly, a sample bearing assembly, an induction assembly and the sample temperature control assembly, the environment where a detected object is located can be conveniently adjusted, the detected object can be rapidly switched among the high-temperature environment, the low-temperature environment and the room-temperature environment so as to meet corresponding detection requirements, the detected object can be conveniently replaced, and the detection efficiency is improved. The use difficulty is reduced, and the use efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic measurement, and particularly relates to a sample temperature control component and a vibrating sample magnetometer. Background Art

[0002] A vibrating sample magnetometer is an important means for measuring the magnetic properties of substances. It evaluates the magnetism of materials by measuring the magnetic moment of a sample that vibrates slightly at a certain frequency and amplitude near a set of detection coils. The vibrating sample magnetometer can be used to measure the magnetism of various types of materials, including metals, alloys, ceramics, oxides, magnetic materials, etc. It can measure magnetic parameters such as the magnetization curve, hysteresis loop, magnetic susceptibility, and remanent magnetization intensity, and has a wide range of applications.

[0003] In some cases, it is necessary to keep the object to be measured at different temperatures to detect the magnetism of the object to be measured in the corresponding state, so as to obtain the performance of the object to be measured at different temperatures. In the prior art, for the case of increasing the temperature of the object to be measured or keeping it at a high temperature, it is mainly achieved by setting a heater at the position where the object to be measured is located; for the case of decreasing the temperature of the object to be measured or keeping it at a low temperature, it is mainly achieved by setting a cavity and cooling the object to be measured in the cavity, and the cavity structure makes it difficult to disassemble and assemble the object to be measured. Therefore, the sample temperature control device in the existing vibrating sample magnetometer has the defect of being difficult to replace the object to be measured.

[0004] The above information disclosed in the background art section is only used to enhance the understanding of the background of the present utility model, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0005] Aiming at the defect of the existing high and low temperature vibrating sample magnetometer that it is difficult to replace the object to be measured, the present utility model first provides a sample temperature control component, including a variable temperature cavity and a moving component. The variable temperature cavity is provided with an opening, and the opening is configured to enable the object to be measured to extend into it. The opening is arranged on the upper side of the variable temperature cavity. A gas supply pipe is connected to the inside of the variable temperature cavity, and the gas supply pipe is connected to one of a cold source and a heat source. The moving component includes a moving seat, a rocker arm, and a fixed seat. The variable temperature cavity is arranged on the moving seat. The moving seat is slidably connected to the fixed seat through a slide rail. The fixed seat is installed on an external device. The rocker arm is rotatably connected to the fixed seat. One end of the rocker arm far from the rotation axis can drive the moving seat to switch at least between a first position and a second position, and the second position is higher than the first position. When the moving seat is in the first position, the object to be measured is located outside the variable temperature cavity. When the moving seat is in the second position, the object to be measured is located inside the variable temperature cavity.

[0006] According to the description of an embodiment of the present utility model, the length direction of the slide rail is arranged along the vertical direction.

[0007] According to the description of an embodiment of the present utility model, a roller is provided at one end of the rocker arm away from the rotating shaft, and when the moving seat switches at least between the first position and the second position, the roller rolls on the bottom surface of the moving seat.

[0008] According to the description of an embodiment of the present utility model, a heater is provided inside the variable temperature chamber.

[0009] According to the description of an embodiment of the present utility model, the opening of the variable temperature chamber is made of non-magnetic material.

[0010] According to the description of an embodiment of the present utility model, the moving assembly further includes a control arm, the control arm is in transmission connection with the rocker arm, and the force arm of the control arm is longer than the force arm of the rocker arm.

[0011] According to the description of an embodiment of the present utility model, the length directions of the control arm and the rocker arm are parallel to each other.

[0012] According to the description of an embodiment of the present utility model, the variable temperature chamber is provided as a multi-layer cavity, and the multi-layer cavity at least includes a heat insulation layer.

[0013] According to the description of an embodiment of the present utility model, the variable temperature chamber is columnar, the opening is provided at one end of the variable temperature chamber, and the length direction of the variable temperature chamber is parallel to the length direction of the slide rail.

[0014] The present utility model also provides a vibrating sample magnetometer, including an exciting component, a sample carrying component, an induction component, and the aforementioned sample temperature control component. The exciting component is configured to be able to form a magnetic field in a preset position. The sample carrying component includes a sample rod, and one end of the sample rod carrying the object to be measured is located at the preset position. The induction component is close to the preset position. When the moving seat is in the first position, the object to be measured is located outside the variable temperature chamber; when the moving seat is in the second position, the object to be measured is located inside the variable temperature chamber.

[0015] The present utility model has at least the following beneficial effects:

[0016] The sample temperature control component provided by the present utility model, and the vibrating sample magnetometer adopting the aforementioned temperature control component, can enable the object to be measured to conveniently enter and exit the variable temperature chamber, facilitate adjusting the environment where the object to be measured is located, enable the object to be measured to quickly switch between high temperature, low temperature, and room temperature environments to meet the corresponding detection requirements; when the object to be measured is outside the variable temperature chamber, it is convenient to replace the object to be measured, reducing the use difficulty and improving the use efficiency. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the sample temperature control component.

[0018] Figure 2 It is a schematic diagram of an embodiment of the rocker arm and its driving mechanism of the sample temperature control component.

[0019] Figure 3 For Figure 2 It is a schematic diagram of another state of the rocker arm and its driving mechanism shown.

[0020] Figure 4 It is a schematic diagram of a use state of the sample temperature control component.

[0021] Figure 5 It is a schematic diagram of another use state of the sample temperature control component. Detailed Embodiments

[0022] To make the objectives and features of the present utility model more obvious and understandable, the following further describes the detailed embodiments of the present utility model with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise ratios, and are only used to conveniently and clearly assist in explaining the objectives of the embodiments of the present utility model.

[0023] The present utility model provides a sample temperature control component, including a temperature-changing chamber 100 for adjusting the temperature of the object to be measured, and a moving component 200 for moving the temperature-changing chamber 100.

[0024] The temperature-changing chamber 100 is provided with an opening 111, and the opening 111 is configured to enable the object to be measured to extend therein. The temperature-changing chamber 100 is in the form of a cavity, and the temperature-changing chamber 100 can be moved to enable the object to be measured to enter the interior of the cavity, so as to facilitate the adjustment of the temperature of the object to be measured. An air supply pipe 121 is connected to the inside of the temperature-changing chamber 100, and the air supply pipe 121 is connected to one of a cold source and a heat source to introduce a corresponding gas into the cavity of the temperature-changing chamber 100, so as to form an environment with a corresponding temperature in the temperature-changing chamber 100. When it is not necessary to control the temperature of the object to be measured, the temperature-changing chamber 100 can also be moved to move the object to be measured outside the cavity, so that the object to be measured is located in the external environment, avoiding the influence of the temperature-changing chamber 100 on the temperature of the object to be measured. When switching between the internal and external positions of the object to be measured and the temperature-changing chamber 100, the object to be measured moves through the opening 111. Therefore, the shape of the opening 111 can be set as needed. In particular, the opening 111 needs to enable the object to be measured to pass through. Additionally, in some cases, it is also necessary to enable the sample rod for fixing the object to be measured and the object to be measured to pass through together.

[0025] The moving component 200 includes a moving base 210, a rocker arm 231, and a fixed base 220. The variable temperature chamber 100 is disposed on the moving base 210. Thus, the variable temperature chamber 100 can move under the drive of the moving base 210 to adjust the relative position between the variable temperature chamber 100 and the object to be measured, so that the object to be measured can enter and exit the cavity of the variable temperature chamber 100. For the moving base 210, the moving base 210 is slidably connected to the fixed base 220 through a slide rail 223. The fixed base 220 is installed on an external device. For example, it is installed on a fixed platform, or it can also be slidably connected to a fixed platform. The rocker arm 231 is rotatably connected to the fixed base 220. One end of the rocker arm 231 away from the rotating shaft can drive the moving base 210 to switch at least between a first position and a second position. That is to say, the first position and the second position are different. By configuring the position of the object to be measured, when the moving base 210 is at the first position and the second position, the variable temperature chamber 100 and the object to be measured are in different relative positions.

[0026] Specifically, as a feasible solution, when the moving base 210 is in the first position, the object to be measured is located outside the variable temperature chamber 100; when the moving base 210 is in the second position, the object to be measured is located inside the variable temperature chamber 100. When the second position is higher than the first position, the variable temperature chamber 100 will move at least along the numerical direction. Correspondingly, the opening 111 is provided on the upper side of the variable temperature chamber 100 so that when the variable temperature chamber 100 moves in the vertical direction, the object to be measured at a fixed position can enter or exit the cavity of the variable temperature chamber 100 through the opening 111.

[0027] Please refer to Figure 4 , which shows a situation where the moving base 210 is in the second position. Among them, the object to be measured extends into the inner side of the cavity of the variable temperature chamber 100 from the opening 111 of the variable temperature chamber 100; please refer to Figure 5 , which shows a situation where the moving base 210 is in the first position. Among them, the object to be measured is located outside the variable temperature chamber 100.

[0028] Please refer to Figures 1 to 3 , in use, the rocker arm 231 rotates around its rotating shaft. The position of the rotating shaft of the rocker arm 231 is relatively fixed with respect to the fixed base 220. Thus, the position of the end of the rocker arm 231 near the rotating shaft remains substantially unchanged, and the position of the end of the rocker arm 231 away from the rotating shaft changes. The end of the rocker arm 231 away from the rotating shaft drives the moving base 210 to slide on the slide rail 223 so that the moving base 210 can switch between the first position and the second position. The rocker arm 231 can be driven either manually or by setting a corresponding driving device or equipment.

[0029] Please refer to Figure 4 , Figure 5, the temperature-changing chamber 100 is driven to move by the rocker arm 231, so that the object to be measured can move inside and outside the cavity of the temperature-changing chamber 100. When the object to be measured is inside the cavity of the temperature-changing chamber 100, high-temperature gas or low-temperature gas is introduced into the cavity through the air supply pipe 121, so that the temperature inside the temperature-changing chamber 100 is in a high-temperature or low-temperature state, and then the temperature of the object to be measured inside it is in a high-temperature or low-temperature state, so as to realize the adjustment of the temperature of the object to be measured. Since the volume of the cavity of the temperature-changing chamber 100 is small, when the temperature inside the cavity changes to the preset temperature, the amount of gas required is reduced, saving cold and heat; in addition, the opening 111 of the temperature-changing chamber 100 is arranged upward, which can keep the gas inside the cavity flowing and reduce the entry of external gas into the cavity, avoiding the interference of external gas on the temperature inside the cavity; in addition, the temperature inside the cavity can also be kept constant by continuously introducing gas at the preset temperature, reducing the difficulty of temperature control. When the object to be measured is outside the cavity of the temperature-changing chamber 100, the object to be measured can be easily disassembled and assembled, which is convenient for replacing the object to be measured; in addition, under the detection requirement that the temperature of the object to be measured does not need to be controlled, the object to be measured can also be directly detected without removing the temperature control component.

[0030] Please refer to Figure 1 , Figure 4 , Figure 5 , as a preferred implementation manner, the length direction of the slide rail 223 is arranged along the vertical direction. Of course, in some cases, the slide rail 223 can also be arranged in other directions, as long as it has a vertical component, which can enable the moving seat 210 to move at least in the height direction, and the position of the opening 111 needs to be adjusted correspondingly, so that the moving direction of the moving seat 210 matches the opening 111 through which the object to be measured enters and exits the cavity. Please refer to Figure 1 , which shows a setting manner of the fixed seat 220. Among them, the fixed seat 220 includes a vertically arranged vertical plate 221 and a horizontally arranged horizontal plate 222. The vertical plate 211 and the horizontal plate 222 are fixedly connected, and the slide rail 223 for the moving seat 210 to slide is arranged on the vertical plate 221, so that the moving seat 210 can move in the vertical direction.

[0031] As a feasible implementation manner, one end of the rocker arm 231 away from the rotating shaft can be arranged at the bottom of the moving seat 210, and the end of the rocker arm 231 away from the rotating shaft acts on the bottom of the moving seat 210, so as to support the lifting of the moving seat 210. Please refer to Figure 1 , Figure 4, which shows a situation where the rocker arm 231 drives the moving seat 210 to rise to the second position. Among them, the end of the rocker arm 231 far from the rotating shaft abuts against the bottom of the moving seat 210, and the rotating shaft of the rocker arm 231 is relatively fixed. At this time, for the moving seat 210, on the one hand, it is limited in the horizontal direction by the slide rail 223, and on the other hand, it is supported from the bottom by the rocker arm 231, so that the moving seat 210 is stably in the second position. Please refer to Figure 5 , which shows a situation where the moving seat 210 descends to the first position. During the descent of the moving seat 210, the end of the rocker arm 231 far from the rotating shaft abuts against the bottom of the moving seat 210 and gradually descends. The moving seat 210 gradually descends at least under the action of its own gravity. When the moving seat 210 descends to the first position, in the vertical direction, the moving seat 210 can be limited by the end of the slide rail 223 of other devices, or the end of the rocker arm 231 far from the rotating shaft can be in contact with or abut against the moving seat 210 for limitation; combined with the slide rail 223 limiting the moving seat 210 in the horizontal direction, the moving seat 210 is further in the first position.

[0032] Of course, the moving seat 210 rises and descends under the action of the rocker arm 231 to switch between the first position and the second position, and the switching process is reversible, which will not be elaborated here.

[0033] Please refer to Figure 2 、 Figure 3 , in order to enable the end of the rocker arm 231 far from the rotating shaft to stably drive the moving seat 210 to switch between the first position and the second position, either the end of the rocker arm 231 far from the rotating shaft can be set as an arc surface or a spherical surface, or a roller 232 can be arranged at the end of the rocker arm 231 far from the rotating shaft, and when the moving seat 210 switches between at least the first position and the second position, the roller 232 rolls on the bottom surface of the moving seat 210. Correspondingly, for the bottom surface of the moving seat 210, it can also be set in forms such as a plane, an arc surface, a spherical surface, etc., and a groove or a guiding mechanism for the rocker arm 231 to slide or the roller 232 to roll can also be arranged.

[0034] In some cases, a limiting mechanism can be further arranged at the bottom of the moving seat 210 to limit the end of the rocker arm 231 far from the rotating shaft and the moving seat 210 in the vertical direction. For example, a slide rail is arranged for the end of the rocker arm 231 far from the rotating shaft to slide in a direction parallel to the bottom of the moving seat 210.

[0035] Please refer to Figure 1 、 Figure 4 、 Figure 5, The air supply pipe 121 is connected to the inner side of the temperature-changing chamber 100, and high-temperature and low-temperature gases are introduced into the cavity of the temperature-changing chamber 100. As a relatively practical implementation, the temperature-changing chamber 100 is set as a column, one end of the column 110 is open as the opening 111 of the cavity, and the other end of the column 110 is closed and one end of the air supply pipe 121 extends into the inner side of the column 110. In some cases, in order to further avoid the influence of the external environment on the temperature inside the column 110, a multi-layer column 110 structure or a multi-layer cavity structure can be set, and a heat insulation layer is added to the multi-layer column 110 or cavity structure, or the heat insulation layer is used as one layer of the multi-layer column 110 or cavity structure to reduce the temperature exchange between the inner and outer sides of the column 110.

[0036] In some cases, please refer to Figure 1 , when the gas flows in the air supply pipe 121, the ambient temperature easily affects the temperature of the air supply pipe 121, and then affects the temperature of the gas, resulting in inaccurate temperature control in the cavity of the temperature-changing chamber 100. Therefore, a heat insulation sleeve 122 can be arranged on the outer side of the air supply pipe 121 to reduce the temperature exchange between the air supply pipe 121 and the external environment, so that the temperature in the cavity of the temperature-changing chamber 100 is easier to accurately control.

[0037] In some cases, the air supply pipe 121 and the corresponding heat insulation sleeve 122 also need to be fixed. Please refer to Figure 1 , a fixing sleeve 215 can be arranged on the moving seat 210, and the heat insulation sleeve 122 is fixed on the moving seat 210 through the fixing sleeve 215. Specifically, it can be fixed on the non-bottom surface of the moving seat 210. In some cases, one end of the air supply pipe 121 close to the temperature-changing chamber 100 needs to keep a fixed relative position with the temperature-changing chamber 100. A fixing member 214 can be set to fix one side of the air supply pipe 121 close to the temperature-changing chamber 100 to the moving seat 210. At the same time, the temperature-changing chamber 100 is also fixed to the moving seat 210 by using a fixing member 213. Please refer to Figure 1 , a feasible fixing method is shown. Among them, the moving seat 210 is provided with a vertical plate 211 and a horizontal plate 212. The vertical plate 211 and the horizontal plate 212 are fixedly connected and arranged at an angle. The air supply pipe 121 is bent so that at least part of the air supply pipe 121 is parallel to the vertical plate 211 and at least part of the air supply pipe 121 is parallel to the horizontal plate 212. The temperature-changing chamber 100 is fixed to a position close to the upper side of the vertical plate 211 through a fixing member 213, so that one end of the opening 111 of the temperature-changing chamber 100 extends outwards. The fixing member 214 fixes one side of the air supply pipe 121 close to the temperature-changing chamber 100 to the vertical plate 211, and the other section of the air supply pipe 121 is fixed to the horizontal plate 212 through a fixing sleeve 215. Through this method, a relatively stable fixing method for the temperature-changing chamber 100 and the air supply pipe 121 is realized.

[0038] In some cases, a heater may be provided inside the variable temperature chamber 100 to heat the environment inside the variable temperature chamber 100 to adjust the temperature of the object to be measured. Specifically, when the gas supply pipe 121 passes low-temperature or high-temperature gas into the variable temperature chamber 100, the temperature inside the variable temperature chamber 100 may be adjusted by the heater to quickly control the temperature of the object to be measured; or when the gas supply pipe 121 does not pass gas into the variable temperature chamber, the temperature inside the variable temperature chamber 100 may be directly adjusted by the heater to at least meet the detection requirements under high temperature conditions.

[0039] Please refer to 4. Figure 5 When using a vibrating sample magnetometer to detect an object to be measured, the object to be measured needs to be placed in a magnetic field environment. For example, the sample is carried by the end of the sample rod 310, a magnetic field is generated by the magnetic field generating coil 420, and the magnetic field generated by the magnetic field generating coil 420 is extended by the pole head 410 to form a magnetic field extending toward the location of the object to be measured at the end face 411 of the pole head 410. Correspondingly, the variable temperature chamber 100 needs to extend between the end faces 411 of the pole head 410, or close to the end face 411 of the pole head 410. At this time, the opening 111 of the variable temperature chamber 100 needs to be made of non-magnetic material to avoid affecting the magnetic field environment of the object to be measured.

[0040] See also Figure 2 , Figure 3 The moving assembly 200 further includes a control arm 234, which is connected to the rocker arm 231 by transmission. Specifically, the control arm 234 can be connected to the rocker arm 231 via a transmission shaft 233, or a corresponding transmission mechanism can be provided to achieve the connection between the control arm 234 and the rocker arm 231. In order to make the lifting operation of the moving seat 210 easier, the control arm 234 and the rocker arm 231 can be configured so that the force arm of the control arm 234 is longer than the force arm of the rocker arm 231.

[0041] In order to facilitate the control of the position and angle of the rocker arm 231, the control arm 234 and the rocker arm 231 can be made parallel in length direction so that the angle of the control arm 234 is relative to the angle of the rocker arm 231, so that the angular position of the rocker arm 231 can be determined by the angular position of the control arm 234.

[0042] See also Figure 2 , Figure 3, which shows a simple and feasible configuration of the rocker arm 231 and the control arm 234. The control arm 234 and the transmission arm 233 are integrally provided. The transmission arm 233 is fixed to one side of the fixed seat 220 close to the moving seat 210 through the fixing member 235. The end of the transmission arm 233 is connected with the rocker arm 231, so that the rotating shafts of the control arm 234 and the rocker arm 231 are fixedly connected. When the transmission arm 233 is relatively long, multiple fixing members 235 can be provided to fix the transmission arm 233. It should be noted that the fixing member 235 mainly fixes the radial direction of the transmission arm 233 and does not affect the rotation of the transmission arm 233. In some cases, a handle 236 can also be provided on the control arm 234 according to needs for easy operation.

[0043] Please refer to Figure 1 , when the variable temperature chamber 100 is columnar and the opening 111 is provided at one end of the variable temperature chamber 100, the length direction of the variable temperature chamber 100 can be parallel to the length direction of the slide rail 223 to facilitate the entry and exit of the object to be measured into and out of the variable temperature chamber 100.

[0044] The present utility model also provides a vibrating sample magnetometer using the foregoing temperature control assembly, including an exciting assembly, a sample carrying assembly, an induction assembly, and the foregoing temperature control assembly. Among them, the exciting assembly is configured to form a magnetic field in a preset position. The sample carrying assembly includes a sample rod 310. One end of the sample rod 310 carrying the object to be measured is located at the foregoing preset position. The induction assembly is close to the foregoing preset position to detect the dipole field of the object to be measured magnetized by the exciting assembly through the induction assembly, thereby realizing the detection of the magnetism of the object to be measured.

[0045] Please refer to Figure 4 、 Figure 5 , which shows a feasible form of a vibrating sample magnetometer. Among them, the exciting assembly includes a magnetic field generating coil 420 and a pole head 410. The end face 411 of the pole head 410 is close to the position where the object to be measured is located, that is, close to the preset position. The magnetic field generating coil 420 is sleeved on the pole head 410. There are two groups of the magnetic field generating coil 420 and the pole head 410. The two pole heads 410 are arranged opposite to each other and the object to be measured is located between the end faces 411 of the two pole heads 410.

[0046] In some cases, it is also necessary to be able to move the temperature control assembly into or out of the space between the pole heads 410. Correspondingly, a slide rail 240 for the fixed seat 220 to slide can be provided, and the movement of the fixed seat 220 drives the movement of the variable temperature chamber 100 and the moving assembly 200 to facilitate the adjustment of the position of the temperature control assembly.

[0047] The basic principle, main features and advantages of the present utility model have been shown and described above. Therefore, the above description is only an embodiment of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model also includes various equivalent changes and improvements, and these changes and improvements will all fall within the scope of the present utility model claimed.

Claims

1. A sample temperature control component, characterized in that: It includes a variable temperature chamber and a moving assembly, wherein the variable temperature chamber is provided with an opening, wherein the opening is configured to allow a measured object to be inserted, wherein the opening is provided on the upper side of the variable temperature chamber, wherein an air supply pipe is connected to the inner side of the variable temperature chamber, wherein the air supply pipe is connected to one of a cold source and a heat source; wherein the moving assembly includes a moving seat, a rocker arm, and a fixed seat, wherein the variable temperature chamber is provided on the moving seat, wherein the moving seat and the fixed seat are slidably connected via a slide rail, wherein the fixed seat is mounted on an external device, wherein the rocker arm is rotatably connected to the fixed seat, wherein an end of the rocker arm away from the rotating shaft can drive the moving seat to switch between at least a first position and a second position, wherein the second position is higher than the first position; When the movable seat is in the first position, the object to be measured is located outside the temperature-changing chamber; When the movable seat is at the second position, the object to be measured is located inside the temperature-changing chamber.

2. The sample temperature control assembly according to claim 1, wherein: The length direction of the slide rail is arranged along the vertical direction.

3. The sample temperature control component according to claim 1, wherein: A roller is arranged at one end of the rocker arm away from the rotating shaft, and when the movable seat is switched between at least the first position and the second position, the roller rolls on the bottom surface of the movable seat.

4. The sample temperature control assembly according to claim 1, wherein: A heater is arranged inside the temperature-changing chamber.

5. The sample temperature control assembly according to claim 1, wherein: The opening of the temperature-changing cavity is made of non-magnetic material.

6. The sample temperature control assembly according to claim 1, wherein: The moving assembly also includes a control arm, which is transmission-connected to the rocker arm, and a lever arm of the control arm is longer than a lever arm of the rocker arm.

7. The sample temperature control assembly according to claim 6, wherein: The length directions of the control arm and the rocker arm are parallel to each other.

8. The sample temperature control component according to claim 1, wherein: The temperature-variable cavity is configured as a multi-layer cavity, and the multi-layer cavity at least includes a heat-insulating layer.

9. The sample temperature control component according to claim 1, wherein: The temperature-changing chamber is columnar, the opening is arranged at one end of the temperature-changing chamber, and the length direction of the temperature-changing chamber is parallel to the length direction of the slide rail.

10. A vibrating sample magnetometer, comprising an excitation component, a sample carrier component, and an induction component. The excitation component is configured to form a magnetic field at a preset position. The sample carrier component includes a sample rod, and one end of the sample rod for carrying the object to be measured is located at the preset position. The induction component is close to the preset position, and is characterized in that: The vibrating sample magnetometer also includes the sample temperature control assembly as described in claim 1, when the movable seat is in the first position, the object to be measured is located outside the variable temperature chamber; when the movable seat is in the second position, the object to be measured is located inside the variable temperature chamber.

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