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Preparation method of a new type of multiferroic dielectric ceramics

A dielectric ceramic and ferroelectric technology, which is applied in the field of preparation of new multiferroelectric dielectric ceramics, can solve the problems that the dielectric properties of dielectric ceramic materials have not been studied, and achieve the effects of low production cost, improved dielectric properties, and good appearance

Inactive Publication Date: 2015-11-11
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, TbMn 2 o 5 As a dielectric ceramic material, the preparation process and its dielectric properties have not been studied

Method used

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  • Preparation method of a new type of multiferroic dielectric ceramics
  • Preparation method of a new type of multiferroic dielectric ceramics
  • Preparation method of a new type of multiferroic dielectric ceramics

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Embodiment Construction

[0023] The present invention will be further described below through specific embodiments.

[0024] A preparation method of a novel multiferrodielectric ceramic, comprising the following steps:

[0025] Step 1, according to the ratio that the molar ratio of metal ion Tb and Mn is 1:2, take the Tb that purity is 99.99% 4 o 7 and a purity of 99.5% Mn(CH 3 COO) 2 4H 2 O is the raw material, the above two raw materials are dissolved in 2mol / L dilute nitric acid solution and deionized water respectively, then these two solutions are mixed and stirred evenly by a magnetic stirrer, and deionized water is added to adjust the concentration of Tb ions in the solution to 0.2mol / L, after continuing to stir for 4h, set aside;

[0026] Step 2, in the solution that step 1 obtains, add the C that is equimolar with the metal ion total amount in the solution 6 h 8 o 7 ·H 2 O, stirred for 24 hours, then adjusted the pH value of the solution to 3.5 with ammonia water, evaporated the obta...

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Abstract

The invention discloses a preparation method of a novel multiferroic dielectric ceramic. The preparation method comprises the following steps: mixing raw materials, dissolving, adding a corresponding catalyst or complex agent, drying, pyrolyzing, grinding, presintering, and sintering to obtain a finished product. The sintering temperature is low, the preparation method is easy to implement, and the prepared dielectric ceramic is high in purity, good in appearance and excellent in comprehensive performance.

Description

technical field [0001] The invention relates to a preparation method of dielectric ceramics, in particular to a preparation method of novel multiferroelectric dielectric ceramics. Background technique [0002] Multiferroic materials, a class of materials with multiple ordered phases at the same time, have attracted a lot of attention for their rich physics and great potential applications in multifunctional electronic devices. TbMn 2 o 5 As a representative, it is an important member of the multiferroic material family, which exhibits rich phase diagrams and many novel and interesting physical phenomena, such as giant magnetodielectric effect, magnetoelectric polarization reversal effect, etc. An external electric field can induce ferromagnetism, ferroelectricity, and a magnetoelectric effect with a product relationship. The ferroelectric phase transition temperature of this kind of material is about 27K, and the antiferromagnetic phase transition temperature is about 45K...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/50C04B35/624C04B35/622
Inventor 张超王晓飞康大伟王赵武帅小敏李立本
Owner HENAN UNIV OF SCI & TECH