Electrical regulation and control functional assembly of kilohertz resonance system and use method of electrical regulation and control functional assembly

Abstract

The invention discloses an electrical regulation and control functional assembly of a kilohertz resonance system and a use method thereof, and relates to the technical field of magnetic measurement. The device specifically comprises a fixing ring, a sample rod, one or two pairs of extension blocks and a power supply circuit, the sample rod is connected to the fixing ring, and a sample is placed on the sample rod and located at the circle center of the fixing ring; each extension block is connected to the inner wall of the fixing ring and points to the circle center of the fixing ring, and each pair of extension blocks are symmetrically distributed about the sample rod; the power supply access is connected to the extension block, and leads at two ends extend out of the end part of the extension block and are electrically connected with the sample to form a loop. On the basis of realizing quantitative characterization of the in-plane magnetic moment and the vertical plane magnetic moment of the sample, the vertical / in-plane electric field loading capacity is added, synchronous high-precision quantitative characterization can be carried out on an electric control magnetic phenomenon, the function dimension of equipment is expanded while the original magnetic characterization capacity is maintained, the situation that the magnetic relaxation process after field removal cannot be captured is avoided, and the detection accuracy is improved. And serious lack of test real-time performance is avoided.

Description

Technical Field

[0001] The present invention relates to the field of magnetic measurement technology, and in particular to an electrical control functional component of a kilohertz resonance system and a use method thereof. Background Art

[0002] The laser-alternating gradient magnetic measurement device is a high-precision magnetic characterization device. Its principle is to use optical signals to characterize vibration signals, thereby enabling quantitative analysis of magnetic signals. The operating frequency of the device's resonant system has a key impact on its characterization performance. On the one hand, the higher the operating frequency, the less susceptible the device is to low-frequency noise interference, and the correspondingly improved signal-to-noise ratio. On the other hand, the higher the operating frequency of the resonant system (i.e., the resonant frequency between the sample rod and the sample), the shorter the time it takes for the resonant system to reach resonance, thereby improving characterization speed.

[0003] As an emerging research area in spintronics, electric field manipulation of magnetism primarily involves applying an electric field to manipulate material properties coupled to magnetism, such as the sample's carrier distribution, strain distribution, and exchange bias strength, thereby achieving macroscopic control of magnetism. As the market competitiveness of spintronics-based magnetic storage devices and magnetic logic devices continues to grow, electric field manipulation of magnetism (abbreviated as electric manipulation or electrically controlled magnetism) is gaining increasing attention. Magnetic storage and logic devices based on this principle offer numerous advantages, including ultra-low power consumption, non-volatility, high integration, fast response speed, and high reliability, demonstrating broad market application prospects.

[0004] Currently, the field of electrically controlled magnetism research typically employs instruments such as magneto-optical Kerr microscopy (MOKE), scanning tunneling microscopy (STM), X-ray magnetic circular dichroism (XMCD), X-ray linear dichroism photoemission electron microscopy (XLD-PEEM), magnetic force microscopy (MFM), and four-probe thin film testing systems. These instruments indirectly infer magnetic changes under electric fields, such as the direction of magnetic moment precession and phase transitions, by measuring parameters such as the orientation, resistance, and X-ray absorptivity of thin films or devices. However, these instruments are unable to accurately quantify changes in key parameters such as saturation magnetization, remanent magnetization, and coercive field. Although some studies have utilized vibrating sample magnetometers (VSMs) and superconducting quantum interference devices (SQUIDs) for quantitative characterization of electrically controlled magnetism, due to the lack of in-situ magneto-electric coupling testing modules developed by equipment manufacturers, they can only employ a step-by-step operation mode of "applying an electric field-removing the field-transfer measurement." This method cannot capture the magnetic relaxation process after the field is removed, resulting in a serious lack of real-time testing.

[0005] This problem makes it difficult to standardize the real-time quantitative analysis of electromagnetism. The unique architecture of laser-alternating gradient magnetic measurement equipment makes the challenges even more complex. The resonant system of this device requires that the electric field loading module must avoid the parasitic vibration interference of traditional lead electrodes, while also ensuring that the magnetic field detection sensitivity is not affected by electric field loading. The existence of these problems not only makes it impossible to accurately obtain the quantitative changes of key magnetic parameters, but also severely restricts the in-depth research and practical application development of electromagnetism, making it difficult to achieve accurate optimization and evaluation of the performance of magnetic storage and logic devices. Summary of the Invention

[0006] The main purpose of the present invention is to provide an electrical control functional component of a kilohertz resonant system and a method of using the same, aiming to provide a magnetic-electric coupling real-time test module to improve the overall measurement accuracy.

[0007] In order to achieve the above objectives, the present invention proposes a kilohertz resonant system electrical control functional component, comprising:

[0008] Fixed ring;

[0009] a sample rod connected to the fixing ring, on which a sample is placed, and the sample is located at the center of the fixing ring;

[0010] One or two pairs of extension blocks, each of the extension blocks is connected to the inner wall of the fixing ring and points to the center of the fixing ring, and each pair of the extension blocks is symmetrically distributed about the sample rod; and

[0011] The power supply path is connected to the extension block, and the wires at both ends of the power supply path extend from the ends of the extension block and are electrically connected to the sample to form a loop.

[0012] Furthermore, the included angle between the extension block and the sample rod is 30°.

[0013] Furthermore, the extension block is formed by splicing a cuboid and a hexahedron, the cuboid is connected to the inner wall of the fixing ring, and the hexahedron is located at one end of the cuboid close to the sample.

[0014] Furthermore, the extension block is provided with at least one wiring channel along its length direction, the fixing ring is provided with a via hole connected to the wiring channel, and the power supply path extends from the via hole and the wiring channel to the sample.

[0015] Furthermore, the fixing ring is connected to secondary extension rods along both ends of the sample rod, and both ends of the sample rod are respectively connected to the secondary extension rods on corresponding sides.

[0016] Furthermore, a groove and a fixing block are provided at one end of the secondary extension rod close to the sample rod. The fixing block is detachably mounted in the groove, and a cylindrical hole for locking the end of the groove is provided between the groove and the fixing block.

[0017] Furthermore, one end of the secondary extension rod away from the sample rod passes through the fixing ring and is connected to a wire positioning block, and a guide hole connected to the power supply path is formed on the wire positioning block.

[0018] Furthermore, one end of the wire positioning block away from the sample is equipped with a first-level extension rod, and the ends of the two first-level extension rods are respectively equipped with a translation stage connection end and a magnet connection end.

[0019] Furthermore, the aspect ratio of the sample rod is 60 to 75.

[0020] The present application also discloses a method for using an electrical control functional component of a kilohertz resonance system, the method comprising:

[0021] Fix the sample holder with glue in the middle of the sample rod;

[0022] Apply a layer of conductive silver paste to the front and / or back of the sample and allow the paste to air dry.

[0023] The back of the sample is pasted on the sample holder, and the sample is aligned with the geometric center of the sample holder;

[0024] Place both ends of the sample rod on the groove. For the in-plane magnetic moment test, the front of the sample is parallel to the cross section of the groove; for the perpendicular plane magnetic moment test, the front of the sample faces the inner surface of the fixing ring, and both are fixed with a fixing block.

[0025] Select two thin wires from power supply path No. 1 and / or power supply path No. 2 and place them in the corresponding wiring channels. One end of the thin wire should extend out of the wiring channel and touch the end surface of the sample rod, and the other end should be connected to the output end of the voltage source. The thin wires are fixed in the wiring channels to form a functional component.

[0026] The functional component is placed in the LAGM device, and the connection end of the translation stage is mechanically connected to the connection end of the magnet; the voltage source and the LAGM device are turned on to perform quantitative characterization of the electric field-controlled magnetism.

[0027] The above technical solution has the following advantages:

[0028] Based on the structural characteristics of the laser-alternating gradient magnetic measurement equipment, the present invention develops a high-precision electrically controlled magnetic quantitative characterization functional module. While maintaining the original resonant system function of the equipment and realizing the quantitative characterization of the in-plane magnetic moment and perpendicular plane magnetic moment of the sample, a new vertical / in-plane electric field loading capability is added, which can implement synchronous high-precision quantitative characterization of electrically controlled magnetic phenomena. While maintaining the original magnetic characterization capability, the functional dimension of the equipment is expanded to avoid the inability to capture the magnetic relaxation process after the field is removed, thereby avoiding a serious lack of real-time testing.

[0029] This invention utilizes a double-ended fixed sample holder structure. By configuring a double-ended fixed cylindrical sample holder within a specific aspect ratio range, the resonant system's operating frequency reaches the kilohertz range, a two-order-of-magnitude improvement over existing solutions. This allows for high-precision and high-speed characterization of both in-plane and perpendicular magnetic moments. Furthermore, a wiring channel limits the effective length of the wire, thereby reducing the Ampere force experienced by the wire in a magnetic field. Once the wire is secured to the wiring channel, its extended portion directly connects to the sample, significantly reducing parasitic vibration interference and improving electrical connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0033] Figure 3 Schematic diagram of the method of use of the present invention.

[0034] In the figure: 1. Transmission stage connection end; 2. Primary extension rod; 3. Wire positioning block; 4. Fastener; 5. Fixing ring; 6. Sample; 7. Sample rod; 8. Extension block; 9. Secondary extension rod; 10. Magnet connection end; 11. Via hole; 12. Groove; 13. Sample holder; 14. Wiring channel; 15. Fixing block; 16. Power supply path No. 1; 17. Power supply path No. 2. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation of the present invention.

[0036] like Figure 1 and Figure 3As shown, a kilohertz resonance system electrical control functional component includes a fixed ring 5, a sample rod 7, a pair or two pairs of extension blocks 8 and a power supply path. The sample rod 7 is connected to the fixed ring 5, on which a sample 6 is placed, and the sample 6 is at the center of the fixed ring 5; each extension block 8 is connected to the inner wall of the fixed ring 5 and points to the center of the fixed ring 5, and each pair of extension blocks 8 is symmetrically distributed about the sample rod 7; the power supply path is connected to the extension block 8, and the wires at both ends extend from the end of the extension block 8 and are electrically connected to the sample 6 to form a loop. Among them, the sample rod 7 is fixed to the inner ring of the fixed ring 5, and the middle position of the sample rod 7 coincides with the center of the fixed ring 5. The sample 6 is placed in the middle position of the sample rod 7, which is helpful for the subsequent gradient magnetic field test. The extension block 8 is fixed to the inner wall of the fixed ring 5, and one end thereof faces the sample 6. When a pair of extension blocks 8 are selected, the pair of extension blocks 8 can be connected to the upper end or the lower end of the fixed ring 5. When two pairs of extension blocks 8 are used, the two pairs of extension blocks 8 are respectively connected to the upper and lower ends of the fixed ring 5. Preferably, the power supply path is set between the extension blocks 8 on the left and right sides. For example, the wires at both ends of the power supply path are connected from The two extension blocks 8 on the upper side extend toward the sample 6 and make electrical contact with the sample 6, providing current to the sample 6 and generating an electric field. The wires of the power supply path can be fixed along the groove of the outer wall of the extension block 8, or can pass through the inside of the extension block 8. In this application, it is preferred that the wires of the power supply path pass through the inside of the extension block 8. If it is necessary to apply a vertical electric field to the sample 6, a layer of conductive silver glue is applied on both sides of the sample 6. If it is necessary to apply an in-plane electric field to the sample 6, a layer of conductive silver glue is applied on the front or back of the sample 6. After applying, the silver glue can be blown dry with a hot air gun.

[0037] like Figure 2 As shown, in the present application, the angle between the extension block 8 and the sample rod 7 is 30°, which can effectively reduce the magnitude of the Ampere force on the wires of the power supply path in the magnetic field and improve the stability of the electrical connection.

[0038] like Figure 2 As shown, in the present application, the extension block 8 is formed by splicing a cuboid and a hexahedron. The cuboid is connected to the inner wall of the fixing ring 5, and the hexahedron is located at one end of the cuboid close to the sample 6. The cross-section of the hexahedron structure is preferably an isosceles trapezoidal structure. The thickness of the hexahedron is the same as the height of the cuboid, and its bottom surface is the same as the surface shape of the cuboid, and is tightly connected. The angle between the waist of the isosceles trapezoid and its lower base is 60°, which prevents the wire from being too straight, causing the sample 6 and the sample rod 7 to be pulled during vibration, causing unstable vibration. At the same time, it also limits the effective length of the wire, so that the magnitude of the Ampere force on the wire is further reduced, making the electrical connection more stable; the diameter of the wiring channel 14 of the hexahedron is slightly smaller than the diameter of the wiring channel 14 of the cuboid, which can reduce the leakage magnetic penetration of the wiring channel 14 of the hexahedron, which is beneficial to reduce the force on the wires in the power supply path.

[0039] like Figure 2As shown, the extension block 8 is provided with at least one wiring channel 14 along its length, and the fixing ring 5 is provided with a via 11 connected to the wiring channel 14. The power supply path extends from the via 11 and the wiring channel 14 to the sample 6. Among them, each extension block 8 can have one or more wiring channels 14. In the present application, two wiring channels 14 are preferably provided on the extension block 8, and the two wiring channels 14 are arranged in parallel, both for fixing the wires of the power supply path. In actual use, the two upper or two lower wiring channels are usually selected from the four extension blocks 8. For the wiring channel 14 structure in the two selected extension blocks 8, each wiring channel 14 has two paths for lead-in, so there are many optional wiring paths to suit different testing needs.

[0040] like Figure 2 As shown, the retaining ring 5 is connected to a secondary extension rod 9 at each end of the sample rod 7. The two ends of the sample rod 7 are connected to the corresponding secondary extension rod 9. The secondary extension rod 9 is connected to the inner wall of the retaining ring 5. The end of the secondary extension rod 9 facing the center of the retaining ring 5 is fixedly connected to the sample rod 7, or it can be detachably connected. Specifically, it can be fixed with glue, or it can be detachably fixed with bolts, rivets, screw sleeves, or other similar methods.

[0041] Specifically, the present application prefers a detachable method, in which a groove 12 and a fixing block 15 are provided at one end of the secondary extension rod 9 close to the sample rod 7. The fixing block 15 is detachably installed in the groove 12, and a cylindrical hole for locking the end of the groove 12 is provided between the groove 12 and the fixing block 15, wherein a semicircular hole is provided on the groove 12, which is used to pre-place the sample rod 7. Secondly, a semicircular hole is also provided on the fixing block 15. After the fixing block 15 is fitted with the groove 12 and fixed with the fastener 4, two semicircular holes can be used to form a cylindrical hole. In the present application, the structure of the semicircular hole can also be reduced or increased in size as needed, as long as it can be combined into a cylindrical hole.

[0042] like Figure 1 and Figure 2 As shown, the end of the secondary extension rod 9 away from the sample rod 7 passes through the fixing ring 5 and is connected to the wire positioning block 3. The wire positioning block 3 is provided with a guide hole for connecting to the power supply path. The wires of the power supply path can pass through the guide hole and realize the circuit connection, thereby playing a role in arranging the wires. The end of the wire positioning block 3 away from the sample 6 is installed with a primary extension rod 2. The ends of the two primary extension rods 2 are respectively installed with a translation stage connection end 1 and a magnet connection end 10. The translation stage connection end 1 is mechanically fixed to the translation stage. The position is adjusted by the translation stage to facilitate the movement of one end of the sample 6 to the center of the magnetic field. The magnet connection end 10 is then mechanically fixed to the electromagnet base with bolts. The entire assembly can then be placed in the LAGM device for quantitative characterization of electric field-controlled magnetism.

[0043] like Figure 2 and Figure 3 As shown, in the present application, the aspect ratio of the sample rod 7 is 60 to 75. When the aspect ratio of the sample rod 7 is 60, the aspect ratio is relatively small, and the rigidity of the sample rod 7 is good. During the vibration process, its deformation is relatively small, which will increase the natural frequency or resonant frequency of the vibration, enhance the characterization speed and signal-to-noise ratio; when the aspect ratio of the sample rod 7 is 75, the longer sample rod 7 can increase the length of the sensitive area of ​​magnetic field gradient sensing within a certain spatial range, increase the amplitude, and enhance the signal strength, but the frequency will drop slightly. The aspect ratio is in the middle, combining some of the advantages of aspect ratios of 60 and 75. In the actual measurement process, it can not only ensure the increase of the resonant frequency, increase the characterization speed and signal-to-noise ratio, but also increase the amplitude and signal strength, without easily causing large deformation due to excessive length, thereby achieving a good balance between stability and magnetic field gradient sensing sensitivity. Therefore, the present application preferably adopts an aspect ratio of 67.5.

[0044] In this application, to prevent fastener 4, secondary extension rod 9, and fixing block 15 from generating eddy currents in the alternating magnetic field and subsequently vibrating due to electromagnetic forces, fastener 4, secondary extension rod 9, and fixing block 15 are all made of insulating materials, such as acrylic. To prevent sample rod 7 from generating non-ideal magnetic signals that interfere with the magnetic moment measurement of sample 6 after magnetization, sample rod 7 is made of diamagnetic materials, such as carbon fiber or glass fiber. Similarly, to prevent sample holder 13 from generating non-ideal magnetic signals that interfere with the magnetic moment measurement of sample 6 after magnetization, sample holder 13 is made of diamagnetic materials, such as ABS plastic or red wax. Sample 6 is typically a magnetic film or device no larger than 10 mm by 10 mm.

[0045] A method for using an electrical control functional component of a kilohertz resonance system, the method comprising:

[0046] Fix the sample holder 13 in the middle of the sample rod 7 with glue;

[0047] Apply a layer of conductive silver paste to the front and / or back of sample 6, and wait for the silver paste to air-dry after application. If a vertical electric field needs to be applied to sample 6, apply a layer of conductive silver paste to both the front and back of sample 6. If an in-plane electric field needs to be applied to sample 6, apply a layer of conductive silver paste to the front or back of sample 6, and blow the silver paste dry with a hot air gun after application.

[0048] The back of the sample 6 is attached to the sample holder 13, and the geometric centers of the sample 6 and the sample holder 13 are aligned;

[0049] Place both ends of the sample rod 7 on the groove 12. For the in-plane magnetic moment test, the front of the sample 6 is placed parallel to the cross section of the groove 12; or for the perpendicular plane magnetic moment test, the front of the sample 6 faces the inner surface of the fixing ring 5, both fixed with the fixing block 15;

[0050] The two fixing blocks 15 are respectively placed on both ends of the sample rod 7 and on the portion limited by the groove 12, so that the semicircular holes at both ends of the fixing blocks 15 are aligned with the threaded holes at both ends of the groove 12;

[0051] The fasteners 4 are screwed into the circular holes at both ends of the fixing block 15. The fasteners 4 are preferably screws or bolts. In this application, screws are used, that is, the screws pass through the circular holes at both ends of the fixing block 15 and the threaded holes at both ends of the groove 12, and are tightened; the nuts are screwed into the fasteners 4 until they are tightened.

[0052] The power supply path selects power supply path No. 16 and / or power supply path No. 2 17, and the two thin wires of power supply path No. 16 and / or power supply path No. 2 17 are placed in the corresponding wiring channel 14, one end of the thin wire needs to protrude from the wiring channel 14 and touch the end face of the sample rod 7, and the other end is connected to the output end of the voltage source; the thin wire is fixed in the wiring channel 14 to form a functional component; wherein, the ends of the wires of power supply path No. 16 and / or power supply path No. 2 17 close to the sample 6 are bonded to the sample 6 with conductive silver glue, if an electric field perpendicular to the direction of the sample 6 is applied, the two wires need to be bonded to the front and back sides of the sample 6 respectively, if an electric field is applied in the in-plane direction, the two wires need to be bonded to the front or back side of the sample 6, and special attention should be paid to the sample 6 to which a perpendicular electric field is applied, the two wires must not be short-circuited when bonding the wires.

[0053] The functional component was placed in the LAGM device, and the translation stage connection end 1 was mechanically connected to the magnet connection end 10. That is, the translation stage connection end 1 was mechanically connected to the translation stage with screws. The position of the component was adjusted using the translation stage so that the sample 6 was at the center of the magnetic field. The magnet connection end 10 was mechanically connected to the electromagnet base with screws. The banana heads of the two banana head-alligator clamp wires were respectively inserted into the two output terminals of the voltage source. Then, the alligator clamps of the two wires were used to clamp the ends of the two thin wires away from the sample 6. The voltage source and the LAGM device were turned on to perform quantitative characterization of the electric field-controlled magnetism.

[0054] The present invention provides a kilohertz resonant system electrical control component for laser-alternating gradient magnetic measurement equipment. While maintaining the original resonant system functionality and enabling quantitative characterization of the in-plane and perpendicular magnetic moments of sample 6, it also adds the capability to apply perpendicular / in-plane electric fields, enabling simultaneous, high-precision quantitative characterization of electrically controlled magnetic phenomena. Furthermore, the component can apply a perpendicular electric field in the range of 2000 V / mm and an in-plane electric field in the range of 500 V / mm to sample 6, establishing an electrically controlled magnetic quantitative characterization platform. This enhances the device's functionality while maintaining the original LAGM magnetic detection sensitivity.

[0055] The LAGM device uses laser Doppler vibrometer technology to replace the traditional dual-crystal electric plate vibrometer technology, achieving high-precision measurement through principle innovation. It can accurately measure the tiny vibrations of sample 6 in an alternating gradient magnetic field, thereby obtaining relevant properties of the magnetic material.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A kilohertz resonance system electrical control functional component, characterized in that: include: Fixed ring (5); a sample rod (7) connected to the fixing ring (5) and having a sample (6) placed thereon, wherein the sample (6) is located at the center of the fixing ring (5); One or two pairs of extension blocks (8), each of the extension blocks (8) is connected to the inner wall of the fixing ring (5) and points to the center of the fixing ring (5), and each pair of the extension blocks (8) is symmetrically distributed about the sample rod (7); and The power supply path is connected to the extension block (8), and the wires at both ends thereof extend from the ends of the extension block (8) and are electrically connected to the sample (6) to form a loop.

2. The kilohertz resonance system electrical control functional component according to claim 1, characterized in that: The included angle between the extension block (8) and the sample rod (7) is 30°.

3. The kilohertz resonance system electrical control functional component according to claim 1, characterized in that: The extension block (8) is formed by splicing a cuboid and a hexahedron, the cuboid is connected to the inner wall of the fixing ring (5), and the hexahedron is located at one end of the cuboid close to the sample (6).

4. The kilohertz resonance system electrical control functional component according to claim 1 or 3, characterized in that: The extension block (8) is provided with at least one wiring channel (14) along its length direction, the fixing ring (5) is provided with a through hole (11) connected to the wiring channel (14), and the power supply path extends from the through hole (11) and the wiring channel (14) to the sample (6).

5. The kilohertz resonance system electrical control functional component according to claim 1, characterized in that: The fixing ring (5) is connected to secondary extension rods (9) along both ends of the sample rod (7), and the two ends of the sample rod (7) are respectively connected to the secondary extension rods (9) on the corresponding sides.

6. The kilohertz resonance system electrical control functional component according to claim 5, characterized in that: A groove (12) and a fixing block (15) are provided at one end of the secondary extension rod (9) close to the sample rod (7); the fixing block (15) is detachably mounted on the groove (12); and a cylindrical hole for locking the end of the groove (12) is provided between the groove (12) and the fixing block (15).

7. The kilohertz resonance system electrical control functional component according to claim 5 or 6, characterized in that: One end of the secondary extension rod (9) away from the sample rod (7) passes through the fixing ring (5) and is connected to a wire positioning block (3). A guide hole connected to the power supply path is provided on the wire positioning block (3).

8. The kilohertz resonance system electrical control functional component according to claim 7, characterized in that: The ends of the wire positioning blocks (3) away from the sample (6) are each equipped with a first-stage extension rod (2), and the ends of the two first-stage extension rods (2) are respectively equipped with a displacement stage connection end (1) and a magnet connection end (10).

9. The kilohertz resonance system electrical control functional component according to claim 1, characterized in that: The aspect ratio of the sample rod (7) is 60 to 75.

10. A method for using an electrical control functional component of a kilohertz resonance system, characterized in that: The method includes: Fix the sample holder (13) in the middle of the sample rod (7) with glue; Apply a layer of conductive silver paste to the front and / or back of the sample (6), and allow the silver paste to air dry after application; The back side of the sample (6) is attached to the sample holder (13), and the geometric centers of the sample (6) and the sample holder (13) are aligned; The two ends of the sample rod (7) are placed on the groove (12). For the test of the in-plane magnetic moment, the front face of the sample (6) is arranged parallel to the cross section of the groove (12); or for the test of the perpendicular plane magnetic moment, the front face of the sample (6) is facing the inner circular surface of the fixing ring (5), and both are fixed by a fixing block (15); Two thin wires of the first power supply path (16) and / or the second power supply path (17) are selected and placed in the corresponding wiring channel (14), one end of the thin wire protruding from the wiring channel (14) and touching the end surface of the sample rod (7), and the other end connected to the output end of the voltage source; the thin wire is fixed in the wiring channel to form a functional component; The functional component is placed in a LAGM device, and the displacement stage connection end (1) is mechanically connected to the magnet connection end (10); the voltage source and the LAGM device are turned on to perform quantitative characterization of the electric field-controlled magnetism.

Images