A layered perovskite nanosheet, its preparation method, layered perovskite ceramic material with preferred orientation and its preparation method

A technology of perovskite-type and ceramic materials is applied to layered perovskite-type ceramic materials and their preparation, and its preparation, in the field of layered perovskite-type nanosheets, can solve problems such as complex preparation process and achieve improved orientation. degree of effect
CN104671765BActive Publication Date: 2017-05-31UNIV OF SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Publication Date
2017-05-31

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Abstract

The invention belongs to the field of inorganic materials, and particularly relates to a layered perovskite nanosheet, a preparation method thereof, a preferred orientation type layered perovskite ceramic material and a preparation method of the layered perovskite ceramic material. Ca and Co are doped in a layered perovskite nanosheet preparation process, so that the ratio of the length to the thickness of the prepared nanosheet is increased, ordered arrangement of the nanosheets in a pressing forming process is facilitated by means of the increased ratio, accordingly, the degree of orientation of the finally prepared layered perovskite ceramic material is increased, and the finally prepared layered perovskite ceramic material has preferred orientation. The preparation method of the preferred orientation type layered perovskite ceramic material is simple to operate, and the prepared preferred orientation type layered perovskite ceramic material has high degree of orientation and has magnetic anisotropy.
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Description

technical field

[0001] The invention belongs to the field of inorganic materials, and in particular relates to a layered perovskite nanosheet, a preparation method thereof, a layered perovskite ceramic material with preferred orientation and a preparation method thereof. Background technique

[0002] The concept of multiferroic materials was proposed by Schmid in Switzerland in 1994, which means that the same phase of materials contains two or more basic properties of iron, such as ferroelectricity, ferromagnetism and ferroelasticity. This kind of material has both spontaneous ferroelectric order and ferromagnetic order at a certain temperature. It is their simultaneous existence that causes the magnetoelectric coupling effect, makes multiferroic materials have some special physical properties, and triggers several new, Significant physical phenomena, such as: generating electrical polarization or inducing ferroelectric phase transition under the action of a magnetic field; ...

Claims

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