Preparation and application of ferromagnetic-doped material

A kind of use, the technology of strontium ruthenate, applied in magnetic storage, strontium ruthenate doped with cobalt material and its preparation method and in the field of magnetic storage and intelligent switch, can solve the problems of random storage such as power-off volatilization

Inactive Publication Date: 2018-06-08
NANJING UNIV OF POSTS & TELECOMM +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of traditional random storage that is volatile when the power is off, and provide a new type of strontium ruthenate-doped cobalt material for magnetic stora

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  • Preparation and application of ferromagnetic-doped material
  • Preparation and application of ferromagnetic-doped material
  • Preparation and application of ferromagnetic-doped material

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Embodiment Construction

[0020] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings

[0021] The strontium ruthenate doped material provided by the present invention is an oxide containing metal elements Sr, Ru, Co, and its chemical formula is expressed as: SrRu 1-x co x o 3 , where x=0, 5%, 10%, 15%, 20%, 30%. Specifically, the doped material provided by the present invention belongs to a ferromagnet with an orthogonal structure, in which Sr and Ru are used as main elements, and Co in different contents exists in the above-mentioned strontium ruthenate doped material as a doping element. It should be noted that Yes, the electromagnetic properties of strontium ruthenate are closely related to the microscopic crystal structure. The ionic radius of Co is smaller than that of Ru ions. Doping Co elements changes the unit cell structure and lattice parameters of strontium ruthenate. The difference in doping content will lead to ...

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Abstract

The invention discloses preparation and application of a ferromagnetic-doped material. The preparation method comprises the following steps that SrCO3 powder, RuO2 powder and Co3O4 powder are weighedaccording to the proportion for preparing SrRu1-xCoxO3(x=0, 0.05, 0.1, 0.15, 0.2, 0.3), ground, subjected to low-temperature presintering, then fully ground and subjected to high-temperature calcination, finally an adhesive is added to the powder, the powder is ground and pressed, and the material is prepared. According to the ferromagnetic-doped material, conversion of the positive and negative magnetic susceptibility is achieved by controlling temperature change, the material is used for a magnetic storage material and has the advantages of being high in storage speed, nonvolatile, long in service life, small in size, low in power consumption, resistant to radiation and the like, metal-insulation phase change can also be achieved, the material is applied to an intelligent switch material, and the danger of manually controlling a switch in the high-risk industry is avoided.

Description

technical field [0001] The invention relates to the fields of magnetic storage and intelligent switches, in particular to a strontium ruthenate (SrRuO3, abbreviated as SRO) cobalt-doped material and its preparation method and its application in the fields of magnetic storage and intelligent switches. Background technique [0002] Strontium ruthenate (SRO) is a transition metal oxide with a three-dimensional, orthorhombic distorted perovskite structure and the only oxide with magnetic order among 4d elements. Due to its good chemical stability and structural matching with other perovskite materials, SRO is widely used as an electrode material for oxide heterojunctions. As a magnetic oxide, the magnetic properties of SRO vary significantly with temperature, showing paramagnetism at room temperature and ferromagnetism at temperatures below 160K. Strontium ruthenate (SRO) belongs to a strongly correlated electronic system, because of the interconnection of charges, spins, orbit...

Claims

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Application Information

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IPC IPC(8): H01F1/03H01F41/02C01G55/00
CPCH01F1/0313C01G55/002C01P2002/72H01F41/02
Inventor 解其云祁超许静波陈丽敏
Owner NANJING UNIV OF POSTS & TELECOMM
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