A kind of ferromagnetic metal material and its preparation method and application

A ferromagnetic metal, press forming technology, applied in the direction of magnetic materials, inorganic materials, magnetic objects, etc., can solve the problems of weak electronic transition, low temperature of ferromagnetic long program, limited application, etc., and achieve good magnetic anisotropy characteristics. Effect
CN113481420BActive Publication Date: 2022-03-08HENAN UNIVERSITY OF TECHNOLOGY
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN UNIVERSITY OF TECHNOLOGY
Publication Date
2022-03-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A kind of ferromagnetic metal material, the chemical formula of this ferromagnetic metal material is La 3 MnAs 5 , the crystal structure is hexagonal, the space group is P63 / mcm, and the corresponding space group number is 193. The crystal structure of the ferromagnetic metal material is composed of trimerized MnAs along the c-axis direction 6 Octahedrons are connected by face sharing, forming a one-dimensional chain structure; the ab plane is composed of MnAs 6 The chains form a triangular lattice, the chains are arranged in parallel, and the distance between the chains is the lattice constant a. The ferromagnetic metal material is prepared by the following method: First, the metal La powder, the metal Mn powder and the As powder are fully ground and mixed according to the molar ratio of 3:1:5, and then the ground mixture is pressed into shape by a tablet machine, and finally in the The ferromagnetic metal material is obtained by sintering at a pressure of 3-8GPa and at a temperature of 1200-1400°C. The ferromagnetic metal material of the invention has a typical one-dimensional crystal structure, high magnetic transition temperature and good magnetic anisotropy.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of materials, and in particular relates to a ferromagnetic metal material and its preparation method and application. Background technique

[0002] As a class of important basic functional materials, ferromagnetic metal materials have been widely used in many fields such as electronics, automation, communication, medical treatment and daily necessities. At the same time, ferromagnetic materials are also used in information storage, processing and transmission. play an important role. Therefore, as an excellent high-density magnetic recording material, electromagnetic wave absorbing material, biological and medical engineering material, ferromagnetic metal materials have been widely studied and concerned by the majority of scientific researchers.

[0003] The one-dimensional spin chain system exhibits novel physical properties different from two-dimensional or three-dimensional systems due to the reduction o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More