Two-dimensional ferromagnetic Co2Si / Co3Si nanosheet with room-temperature magnetic skyrmion and high Curie temperature characteristic as well as preparation method and application of two-dimensional ferromagnetic Co2Si / Co3Si nanosheet

Two-dimensional ferromagnetic Co2Si/Co3Si nanosheets were prepared in a dual-temperature zone tube furnace using chemical vapor deposition, solving the problem of controllable preparation of high-quality nanosheets. This process also achieved the stability and high Curie temperature of magnetic skyrmions at room temperature, expanding their applications in spintronics and magnetic storage.

CN121849970APending Publication Date: 2026-04-14WUHAN UNIV
0 Cites 0 Cited by

Patent Information

Application Number
CN202610010594.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-06
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing technologies lack controllable and reproducible preparation methods, making it difficult to obtain high-quality two-dimensional Co2Si nanosheets and Co3Si nanosheets. Furthermore, achieving stable magnetic skyrmion structures and high Curie temperatures at room temperature limits their application in spintronic devices and magnetic storage.

Method used

Two-dimensional ferromagnetic Co2Si/Co3Si nanosheets were prepared by using chemical vapor deposition (CVD) in a dual-temperature zone tube furnace with CoCl2 powder as the cobalt source, shredded silicon wafers as the silicon source, and fluorinated mica sheets as the growth substrate, under an inert gas environment and by controlling the reaction temperature and time.

Benefits of technology

Two-dimensional nanosheets with stable ferromagnetic properties and high Curie temperature were prepared at room temperature. The generation and annihilation of magnetic skyrmions could be achieved by applying an external magnetic field, which is suitable for spintronic devices and magnetic storage.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a room-temperature magnetic skyrmion, a two-dimensional ferromagnetic Co2Si / Co3Si nanosheet with a high Curie temperature characteristic and a preparation method and application of the two-dimensional ferromagnetic Co2Si / Co3Si nanosheet, and belongs to the technical field of magnetic materials. A cobalt source is placed in a low-temperature area, a silicon source is placed in a high-temperature area, a fluorine crystal mica sheet is placed above the silicon source in the high-temperature area, chemical vapor deposition reaction is carried out in an inert gas environment, and a two-dimensional ferromagnetic Co2Si nanosheet or Co3Si nanosheet with room-temperature magnetic skyrmion and high Curie temperature characteristics is obtained. The two-dimensional ferromagnetic Co2Si nanosheet and the Co3Si nanosheet have stable room-temperature ferromagnetism and relatively high Curie temperature, generation and annihilation of the room-temperature magnetic skyrmion can be realized through regulation and control of an external magnetic field, and the two-dimensional ferromagnetic Co2Si nanosheet and the Co3Si nanosheet have wide application prospects in the fields of spintronics, low-power-consumption information storage and the like; the method provided by the invention has the advantages of few types of raw materials, simple process, good repeatability and low cost, and is beneficial to large-scale production.
Need to check novelty before this filing date? Find Prior Art