Magnetic field device for magnetic force microscopy

Abstract

The utility model discloses a kind of magnetic field devices for magnetic force microscope, it is related to magnetic field device technical field. Including table body;Rotatably arranged carousel on table body;Sample clamp is arranged on carousel;First magnetic field mechanism is arranged on table body;Second magnetic field mechanism is arranged in table body, driving mechanism for driving carousel rotation is arranged in table body;Stress loading mechanism is further arranged in table body. The utility model is by setting driving mechanism and carousel, the angle adjustment of sample is realized;By setting the size and direction adjustment of first magnetic field mechanism horizontal direction magnetic field, the possibility of comprehensive characterization to the anisotropy of magnetic material is widened;By setting stress loading mechanism, different size stress is exerted to sample upwards, the in-depth study of magnetic domain change under stress influence is improved;By setting second magnetic field mechanism, the size and direction adjustment of magnetic field vertical direction is realized, the possibility of comprehensive characterization to magnetic material under different magnetic field environment is widened.

Description

Technical Field

[0001] This utility model relates to the field of magnetic field device technology, and in particular to a magnetic field device for a magnetic microscope. Background Technology

[0002] Magnetic force microscopy (MFM) is a high-resolution imaging technique that utilizes the magnetic interaction between a magnetized tip and the sample to probe the magnetic domain structure of the sample. Traditional MFM techniques typically only allow the application of a magnetic field perpendicular to the sample surface, limiting the comprehensive characterization of anisotropic magnetic materials and their application across different planes. Furthermore, traditional MFM techniques lack the ability to immobilize samples in thin films during stress testing and magnetic domain observation, restricting in-depth research on domain changes under stress. With the widespread application of magnetic materials in fields such as storage and spintronics, higher technical demands are being placed on the microscopic study of magnetism. Existing magnetic imaging techniques, such as magneto-optical Kerr microscopy (MOKE) and Lorentz transmission electron microscopy (L-TEM), each have their advantages and limitations. Magnetic force microscopy, as one such technique, requires further technical improvements to meet the needs of more precise magnetic measurements. Therefore, a magnetic field device for magnetic force microscopy is specifically proposed. Utility Model Content

[0003] The main objective of this invention is to provide a magnetic field device for a magnetic microscope to solve the aforementioned problems.

[0004] To achieve the above objectives, this utility model provides a magnetic field device for a magnetic force microscope, comprising a table; a turntable rotatably mounted on the table; a sample holder mounted on the turntable; a first magnetic field mechanism mounted on the table; a second magnetic field mechanism mounted inside the table; a drive mechanism for driving the turntable to rotate inside the table; and a stress loading mechanism mounted inside the table.

[0005] Furthermore, the table body includes a surface platform, a left support plate, a right support plate, and a rear support plate; the two ends of the rear support plate are respectively connected to the left support plate and the right support plate; the surface platform is fixedly installed on the left support plate and the right support plate; the turntable is rotatably mounted on the surface platform; and mounting plates are fixedly installed on both the left support plate and the right support plate.

[0006] Furthermore, the drive mechanism includes a first motor, a driving gear, a driven gear, and a transmission shaft; the first motor is mounted on a mounting plate located on the left support plate; the driving gear is mounted on the output end of the first motor; the driven gear is mounted on the transmission shaft and meshes with the driving gear; the top end of the transmission shaft is fixedly connected to the turntable.

[0007] Furthermore, the drive shaft includes a support pile, a connector, and a gear shaft; the top end of the support pile is fixedly connected to the turntable; the bottom end of the support pile is connected to the gear shaft through the connector; and the driven gear is fixedly mounted on the gear shaft.

[0008] Furthermore, the drive mechanism also includes a first sensor, which is used to detect the rotation angle of the first motor.

[0009] Furthermore, the stress loading mechanism includes a threaded rod; a threaded hole is provided on the mounting plate located on the left support plate, and the threaded rod is screwed into the threaded hole; the sample clamp, turntable and drive shaft are all provided with through holes for the threaded rod to pass through.

[0010] Furthermore, a rotating handle is provided at the bottom of the threaded rod.

[0011] Furthermore, the first magnetic field mechanism includes a second motor, a bidirectional lead screw, an end bracket, a first slide rail, a first slider, and N / S pole block magnets; the second motor, the end bracket, and the first slide rail are all mounted on the surface platform; one end of the bidirectional lead screw is connected to the output end of the second motor, and the other end is rotatably connected to the end bracket; the first slider is slidably disposed on the first slide rail; there are two first sliders, and each of the two first sliders is provided with an N / S pole block magnet; the two N / S pole block magnets are arranged opposite each other, located on the front and rear sides of the turntable respectively; the two first sliders are respectively provided with a left-hand nut and a right-hand nut adapted to the bidirectional lead screw.

[0012] Furthermore, the first magnetic field mechanism also includes a second sensor and a sensor bracket; the sensor bracket is fixed on the surface platform, and the second sensor is installed inside the sensor bracket, and the second sensor is used to detect the position of the first slider.

[0013] Furthermore, the second magnetic field mechanism includes a third motor, a one-way lead screw, a second slide rail, a second slider, support columns, and N / S pole columnar magnets; the third motor is mounted on a mounting plate located on the right support plate; the lower end of the one-way lead screw is connected to the output end of the third motor; the second slide rail is vertically mounted on the mounting plate located on the right support plate; the second slider is slidably disposed on the second slide rail; a lead screw pair adapted to the one-way lead screw is provided in the middle of the second slider; two support columns are provided, respectively installed at both ends of the second slider; N / S pole columnar magnets are provided at the top of both support columns; and an elongated hole for the N / S pole columnar magnets to pass through is provided on the surface platform.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model achieves sample angle adjustment by setting up a driving mechanism and a turntable; and achieves horizontal magnetic field magnitude and direction adjustment by setting up a first magnetic field mechanism, thus broadening the possibility of comprehensive characterization of the anisotropy of magnetic materials.

[0016] 2. This utility model, by setting up a stress loading mechanism, applies upward stress of different magnitudes to the sample, thereby enhancing the in-depth study of magnetic domain changes under the influence of stress.

[0017] 3. By setting up a second magnetic field mechanism, this utility model enables the adjustment of the magnitude and direction of the magnetic field in the vertical direction, thus broadening the possibility of comprehensively characterizing magnetic materials under different magnetic field environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall magnetic field device for a magnetic microscope proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the surface platform of a magnetic field device for a magnetic microscope proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the driving mechanism of a magnetic field device for a magnetic microscope proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the stress loading mechanism of a magnetic field device for a magnetic microscope proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the second magnetic field mechanism of a magnetic field device for a magnetic microscope proposed in this utility model.

[0023] In the diagram: 1. Rear support plate; 2. Left support plate; 3. Right support plate; 4. Surface platform; 5. Mounting plate; 6. First motor; 7. Third motor; 8. Driven gear; 9. Dial; 10. Connector; 11. Second sensor; 12. Second motor; 13. Threaded rod; 14. Bidirectional lead screw; 15. Unidirectional lead screw; 16. Turntable; 17. End bracket; 18. Elongated hole; 19. N / S pole block magnet; 20. N / S pole cylindrical magnet; 21. Second slider; 22. Support post; 23. Sensor bracket; 24. First slide rail; 25. First slider; 26. Gear shaft; 27. Support post; 28. Sample clamp; 29. ​​Drive gear; 30. First sensor. Detailed Implementation

[0024] To achieve the above objectives and effects, the technical means and structure adopted by this utility model are described in detail with reference to the accompanying drawings, focusing on the features and functions of the preferred embodiments of this utility model.

[0025] like Figures 1-5 As shown, this utility model provides a magnetic field device for a magnetic force microscope, including a table; a turntable 16 is rotatably mounted on the table; a scale 9 is mounted on the turntable 16; a sample clamp 28 is mounted on the turntable 16; a first magnetic field mechanism is mounted on the table; a second magnetic field mechanism is mounted inside the table; a drive mechanism for driving the turntable to rotate is mounted inside the table; and a stress loading mechanism is also mounted inside the table.

[0026] The table body includes a surface platform 4, a left support plate 2, a right support plate 3, and a rear support plate 1; the two ends of the rear support plate 1 are respectively connected to the left support plate 2 and the right support plate 3; the surface platform 4 is fixedly installed on the left support plate 2 and the right support plate 3; the turntable 16 is rotatably mounted on the surface platform 4; and mounting plates 5 are fixedly installed on both the left support plate 2 and the right support plate 3.

[0027] In another embodiment, the driving mechanism includes a first motor 6, a driving gear 29, a driven gear 8, and a transmission shaft. The first motor 6 is mounted on a mounting plate 5 located on the left support plate 2. The driving gear 29 is mounted on the output end of the first motor 6. The driven gear 8 is mounted on the transmission shaft and meshes with the driving gear 29. The top end of the transmission shaft is fixedly connected to the turntable 16. The first motor 6 drives the driving gear 29 to rotate, which in turn drives the driven gear 8, the transmission shaft, the turntable 16, and the sample clamp 28 to rotate synchronously, thereby achieving sample angle adjustment.

[0028] Specifically, the drive shaft includes a support pile 22, a connector 10, and a gear shaft 26; the top end of the support pile 22 is fixedly connected to the turntable 16; the bottom end of the support pile 22 is connected to the gear shaft 26 through the connector 10; and the driven gear 8 is fixedly mounted on the gear shaft 26.

[0029] In another embodiment, the drive mechanism further includes a first sensor 30, which is used to detect the rotation angle of the first motor 6 in order to achieve precise angle adjustment.

[0030] The stress loading mechanism includes a threaded rod 13; a threaded hole is provided on the mounting plate 5 located on the left support plate 2, and the threaded rod 13 is screwed into the threaded hole; the sample clamp 28, the turntable 16, and the drive shaft all have through holes in their middle sections for the threaded rod 13 to pass through. In a preferred embodiment, a rotating handle (not shown) is provided at the bottom of the threaded rod 13. By operating the rotating handle, the threaded rod 13 is rotated, thereby causing the top end of the threaded rod 13 to press upward against the sample in the sample clamp 28, applying upward stress to the sample and enhancing the in-depth study of magnetic domain changes under stress.

[0031] In another embodiment, the first magnetic field mechanism includes a second motor 12, a bidirectional lead screw 14, an end bracket 17, a first slide rail 24, a first slider 25, and N / S pole block magnets 19. The second motor 12, the end bracket 17, and the first slide rail 24 are all mounted on the surface platform 4. One end of the bidirectional lead screw 14 is connected to the output end of the second motor 12, and the other end is rotatably connected to the end bracket 17. The first slider 25 is slidably disposed on the first slide rail 24. There are two first sliders 25, and each of the two first sliders 25 is provided with an N / S pole block magnet 19. The two N / S pole block magnets 19 are arranged opposite each other, located on the front and rear sides of the turntable 16, respectively. The two first sliders 25 are respectively provided with a left-hand nut and a right-hand nut adapted to the bidirectional lead screw 14. By driving the bidirectional lead screw 14 to rotate through the second motor 12, the two first sliders 25 are driven to move towards or away from each other, realizing the back-and-forth movement of the N / S pole block magnets 19, thus broadening the possibility of comprehensive characterization of the anisotropy of magnetic materials.

[0032] The first magnetic field mechanism also includes a second sensor 11 and a sensor bracket 23; the sensor bracket 23 is fixed on the surface platform 4, and the second sensor 11 is installed inside the sensor bracket 23. The second sensor 11 is used to detect the position of the first slider 25.

[0033] In another embodiment, the second magnetic field mechanism includes a third motor 7, a one-way lead screw 15, a second slide rail, a second slider 21, support columns 27, and N / S pole column magnets 20; the third motor 7 is mounted on a mounting plate 5 located on the right support plate 3; the lower end of the one-way lead screw 15 is connected to the output end of the third motor 7; the second slide rail is vertically mounted on the mounting plate 5 located on the right support plate 3; the second slider 21 is slidably disposed on the second slide rail; a lead pair adapted to the one-way lead screw 15 is provided in the middle of the second slider 21; two support columns 27 are provided, respectively installed at both ends of the second slider 21; N / S pole column magnets 20 are provided at the top of both support columns 27; and an elongated hole 18 for the N / S pole column magnets 20 to pass through is provided on the surface platform 4. The third motor 7 drives the unidirectional lead screw 15 to rotate, causing the second slider 21 to move up and down along the second slider 21, thereby realizing the up and down movement of the N / S pole column magnet 20, thus realizing the conversion of the magnitude and direction of the magnetic field in the vertical direction, and broadening the possibility of comprehensively characterizing magnetic materials in different planes.

[0034] The above description is only a preferred embodiment of the present utility model and not all embodiments. Anyone should know that structural changes made under the guidance of the present utility model are protected by the present utility model. All technical solutions that are the same as or similar to the present utility model are within the scope of protection of the present utility model.

Claims

1. A magnetic field device for a magnetic force microscope, characterized in that, Includes a table body; a turntable (16) is rotatably mounted on the table body; a sample clamp (28) is mounted on the turntable (16); a first magnetic field mechanism is mounted on the table body; a second magnetic field mechanism is mounted inside the table body; a drive mechanism for driving the turntable to rotate is mounted inside the table body; and a stress loading mechanism is also mounted inside the table body.

2. The magnetic field device for a magnetic microscope as described in claim 1, characterized in that, The table body includes a surface platform (4), a left support plate (2), a right support plate (3) and a rear support plate (1); the two ends of the rear support plate (1) are respectively connected to the left support plate (2) and the right support plate (3); the surface platform (4) is fixedly installed on the left support plate (2) and the right support plate (3); the turntable (16) is rotatably set on the surface platform (4); and mounting plates (5) are fixedly installed on both the left support plate (2) and the right support plate (3).

3. The magnetic field device for a magnetic microscope as described in claim 2, characterized in that, The drive mechanism includes a first motor (6), a drive gear (29), a driven gear (8), and a transmission shaft; the first motor (6) is mounted on a mounting plate (5) located on the left support plate (2); the drive gear (29) is mounted on the output end of the first motor (6); the driven gear (8) is mounted on the transmission shaft and meshes with the drive gear (29); the top end of the transmission shaft is fixedly connected to the turntable (16).

4. The magnetic field device for a magnetic force microscope as described in claim 3, characterized in that, The drive shaft includes a support pile (22), a connector (10), and a gear shaft (26); the top end of the support pile (22) is fixedly connected to the turntable (16); the bottom end of the support pile (22) is connected to the gear shaft (26) through the connector (10); the driven gear (8) is fixedly installed on the gear shaft (26).

5. A magnetic field device for a magnetic microscope as described in claim 2 or 3, characterized in that, The drive mechanism also includes a first sensor (30) for detecting the rotation angle of the first motor (6).

6. The magnetic field device for a magnetic microscope as described in claim 5, characterized in that, The stress loading mechanism includes a threaded rod (13); a threaded hole is provided on the mounting plate (5) located on the left support plate (2), and the threaded rod (13) is screwed into the threaded hole; the sample clamp (28), the turntable (16) and the drive shaft are all provided with through holes for the threaded rod (13) to pass through.

7. The magnetic field device for a magnetic microscope as described in claim 6, characterized in that, The bottom of the threaded rod (13) is provided with a rotating handle.

8. The magnetic field device for a magnetic microscope as described in claim 1, characterized in that, The first magnetic field mechanism includes a second motor (12), a bidirectional lead screw (14), an end bracket (17), a first slide rail (24), a first slider (25), and N / S pole block magnets (19); the second motor (12), the end bracket (17), and the first slide rail (24) are all mounted on the surface platform (4). One end of the bidirectional lead screw (14) is connected to the output end of the second motor (12), and the other end is rotatably connected to the end bracket (17); the first slider (25) is slidably disposed on the first slide rail (24); there are two first sliders (25), and each of the two first sliders (25) is provided with an N / S pole block magnet (19); the two N / S pole block magnets (19) are arranged opposite each other and are located on the front and rear sides of the turntable (16); the two first sliders (25) are respectively provided with a left-hand nut and a right-hand nut that are compatible with the bidirectional lead screw (14).

9. The magnetic field device for a magnetic force microscope as described in claim 8, characterized in that, The first magnetic field mechanism also includes a second sensor (11) and a sensor bracket (23); the sensor bracket (23) is fixed on the surface platform (4), and the second sensor (11) is installed inside the sensor bracket (23). The second sensor (11) is used to detect the position of the first slider (25).

10. A magnetic field device for a magnetic microscope as described in claim 9, characterized in that, The second magnetic field mechanism includes a third motor (7), a one-way lead screw (15), a second slide rail, a second slider (21), a support column (27), and an N / S pole column magnet (20); the third motor (7) is mounted on a mounting plate (5) located on the right support plate (3); the lower end of the one-way lead screw (15) is connected to the output end of the third motor (7); the second slide rail is vertically mounted on the mounting plate (5) located on the right support plate (3); the second slider (21) is slidably disposed on the second slide rail; a wire pair adapted to the one-way lead screw (15) is provided in the middle of the second slider (21); two support columns (27) are provided, respectively installed at both ends of the second slider (21); an N / S pole column magnet (20) is provided at the top of each of the two support columns (27); an elongated hole (18) for the N / S pole column magnet (20) to pass through is provided on the surface platform (4).

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