Preparation and application of ferromagnetic-doped material

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...

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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 storage; the present invention also realizes the closing of the circuit switch by controlling the temperature change, avoiding manual control of the switch in high-risk industries Dangerous, for the preparation of smart switches

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