Device and method for measuring magnetism by applying uniaxial strain in situ
A uniaxial strain and magnetic technology, which is applied in the fields of magnetic performance measurement, non-electric variable control, instrumentation, etc., can solve problems such as unclear spin coupling mechanism
Pending Publication Date: 2022-04-08
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
So far, people have not fully grasped the relationship between the magnetic properties of materials and the changes in magnetic structure, crystal structure and electronic structure, let alone the coupling mechanism between multiple order parameters such as spin, lattice and charge.
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[0036] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0037] The invention provides a device and method for measuring magnetism by applying uniaxial strain in situ.
[0038] Such as figure 1 and figure 2 As shown, the device includes a pressure bolt 1 and a sample chamber 2. One end of the sample chamber 2 is open and the other end is closed. There are threads in the cavity of the open end, and the threads match the external threads of the pressure bolt. The threaded end of the pressure bolt It can be screwed into the sample chamber, and the sample 4 is placed in the sample chamber.
[0039] Such as Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the diameter of the threaded end of the pressurizing bolt is the same as the inner diameter of the sample chamber, which is 0.1mm...
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Abstract
The invention provides a device and a method for measuring magnetism by applying uniaxial strain in situ, and belongs to the technical field of magnetic measurement. The device is composed of a sample bin for containing a sample and a pressurizing bolt capable of penetrating into the sample bin, strain is applied to the sample by rotating the bolt, and gaskets are arranged on the upper portion and the lower portion of the sample respectively. The size of the sample can be adjusted by adjusting the radiuses of the sample bin and the pressurizing bolt. The strain borne by the sample can be adjusted by adjusting the number of rotation turns of the pressurizing bolt. The device for measuring the magnetism by applying the uniaxial strain in situ can be used for measuring the magnetism by applying the uniaxial strain on a sample. The device is helpful for researching the influence of the uniaxial pressure on the magnetic property of the sample, and has important significance for knowing the interaction mechanism of a plurality of ordered parameters in the magnetic material.
Description
technical field [0001] The invention relates to the technical field of magnetic measurement, in particular to a device and method for measuring magnetic properties by applying uniaxial strain in situ. Background technique [0002] Through magnetic measurement, the basic laws related to magnetism in materials can be obtained. These laws are the comprehensive expression of the interaction between atoms, molecules, ions, and electrons in materials. This understanding plays an important role in the development of magnetic materials. Therefore, magnetic measurement has become an important modern physical measurement technology in the field of science and technology. With the development of magnetism, magnetic materials, magnetic devices, and other magnetic-related science and technology, magnetic measuring instruments, magnetic measuring methods and their technologies are constantly developing and promoting each other. At present, there are many magnetic measurement items and in...
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IPC IPC(8): G01R33/12G05D15/00
Inventor 乔凯明张虎于子原梁宇航陈浩东丛君状
Owner UNIV OF SCI & TECH BEIJING