Use and preparation method of Fe3Sn2 material

A kind of use and metal raw material technology, applied in the field of Fe3Sn2 magnetic materials, can solve the problems of low Curie temperature, singleness, and narrow phase temperature range of magnetic skyrmion formation, and achieve the effect of large size and high quality

Inactive Publication Date: 2017-09-29
INST OF PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, the Curie temperature of this kind of material is low (skyrmions appear near and below the Curie temperature) and the magnetic skyrmion phase temperature region is narrow (the skyrmions in the bulk generally only exist in the Curie temperatures in the range of a few K), thus severely hampering the application of existing magnetic skyrmion materials in magnetic memory devices
In addition, because the Dzyaloshinskii-Moriya interaction restricts the degrees of freedom of the skyrmion helix and vortex, this makes the skyrmion only have a single topology, which limits the diversification of the skyrmion topology.

Method used

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  • Use and preparation method of Fe3Sn2 material
  • Use and preparation method of Fe3Sn2 material
  • Use and preparation method of Fe3Sn2 material

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] The preparation component of the embodiment of the present invention is Fe 3 sn 2 Magnetic alloy single crystals with room temperature skyrmion nanomagnetic domain structure. Preparation of high-quality Fe by high-temperature Sn co-solvent method 3 sn 2 Single crystal, the specific steps are as follows:

[0033] (1) According to the ratio of Fe:Sn=1:19, respectively weigh Fe and Sn metal raw materials with a purity of 99.95%;

[0034] (2) Put the weighed raw materials into the alumina crucible, then put a tantalum tube with one end sealed on the outside of the alumina cruci...

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Abstract

The invention provides the use of a Fe3Sn2 material as a magnetic storage material. The Fe3Sn2 material has a room temperature magnetic Skyrmion nano-magnetic domain structure and can be used as a magnetic storage material for a magnetic memory.

Description

technical field [0001] The present invention relates to a kind of Fe 3 sn 2 The use of magnetic material and its preparation method. Background technique [0002] Magnetic skyrmions (Magnetic Skyrmions) are a new class of magnetic domain structures with vortex spins, which have (1) extremely small size (10-100nm); (2) topological protection (not affected by impurities, etc. interference); (3) low critical domain switching current density (<10 6 A / m 2 )Features. Applying it to the field of magnetic storage can effectively solve the problems that restrict the development of current magnetic storage devices (paramagnetic physical limit, volatility and Joule heating, etc.), so it is very promising to be applied to high-density and low-energy magnetic storage and self-storage A new generation of spintronic devices such as spin transfer torque. [0003] Magnetic skyrmions are mostly found in chiral materials with noncentrosymmetric structures, such as metal helical magnet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L43/10H01L43/08C30B29/52
CPCC30B29/52H10N50/85H10N50/10
Inventor 王文洪侯志鹏丁贝刘恩克吴光恒
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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