Rare earth based magnetic skyrmions material as well as preparation method and application thereof

Abstract

The invention provides a rare earth based magnetic skyrmions material as well as a preparation method and application thereof. The general chemical formula of the magnetic skyrmions material is rare earth Ra(Mn<1-x>Ge<1+x>)bZc, wherein R is one of or a mixture of more of Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm and Yb, and Z is one or more of Fe, Co, Ni, Cu, Zn, Al, Mg, Si, Sn and Cd; and a is larger than or equal to 20 and smaller than or equal to 25, b is larger than or equal to 75 and smaller than or equal to 80, x is larger than or equal to 0 and smaller than or equal to 0.1, c is larger than or equal to 0 and smaller than or equal to 10, the sum of a, b and c is 100, and a, b, c and x represent atomic percent contents. The rare earth based magnetic skyrmions material has a magnetic skyrmions structure in the temperature range of 20 K-400 K, has low raw material cost and controllable components and is an ideal skyrmions-based candidate material for magnetic storage and logicaloperation, and the method is simple in process and applicable to industrialization.

Description

technical field [0001] The invention relates to a rare-earth-based magnetic functional material, in particular to a rare-earth-based magnetic skyrmion material, a preparation method and an application thereof. Background technique [0002] With the increasing degree of social informatization, the requirements for information storage equipment are getting higher and higher. Storage technologies with higher storage density, lower energy consumption, and faster read and write speeds require continuous development of new technologies and materials. [0003] In recent years, the research on magnetic skyrmions (Skyrmions) has been continuously developed, and information storage can be realized by using the generation and annihilation of magnetic skyrmions. At present, non-centrosymmetric B20 structure magnetic materials, multiferroic materials Cu 2 OSo 3 Magnetic skyrmion domain structures have been found in Mn-Zn ferrite materials, antiferromagnetically coupled double-layer an...

AI Technical Summary

Problems solved by technology

[0005] Information storage requires materials to be stable around room temperature, but the B20 structure magnetic materials and oxide magnetic materials with magnetic skyrmion magnetic domains discovered so far have a low phase transition temperature and cannot produce skyrmions at room temperature

However, the preparation of the multilayer film structure system requires expensive precision instruments, which is technically difficult and costly.