CoFe2O4/BaTiO3-(Na0.5Bi0.5)TiO3 material and preparation method thereof

A cofe2o4, chemical technology, applied in the field of material science, can solve the problems of high temperature and reduce the performance of composite materials, and achieve the effect of improving performance, excellent ferroelectricity, and inhibiting mutual reactions

Inactive Publication Date: 2015-04-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of this method is too high, it is easy to produce some unpredictable phases, and reduce the performance of the composite material

Method used

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  • CoFe2O4/BaTiO3-(Na0.5Bi0.5)TiO3 material and preparation method thereof
  • CoFe2O4/BaTiO3-(Na0.5Bi0.5)TiO3 material and preparation method thereof
  • CoFe2O4/BaTiO3-(Na0.5Bi0.5)TiO3 material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] CoFe 2 o 4 / BaTiO 3 -(Na 0.5Bi 0.5 )TiO 3 The chemical expression of the material is xCoFe 2 o 4 / (1-x)0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 , where x is CoFe 2 o 4 The mass percentage of , and x = 0.1.

[0046] The above-mentioned CoFe 2 o 4 / BaTiO 3 -(Na 0.5 Bi 0.5 )TiO 3 The preparation method of material comprises the following steps:

[0047] (1) According to chemical communication 0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 will analyze pure BaCO 3 、TiO 2 、 Bi 2 o 3 、Na 2 CO 3 After preparation, it was mixed evenly by wet ball milling for 4 hours, then dried, sieved, briquetting, and then pre-fired at 880°C for 6 hours to obtain a block product, and then the block sample was crushed and passed through a 120-mesh sieve to obtain 0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 Powder;

[0048] (2) According to the general chemical formula CoFe 2 o 4 Weigh analytically pure Co 3 o 4 , Fe 2 o 3 After preparation, wet ball mill for 6 hours,...

Embodiment 2

[0058] CoFe 2 o 4 / BaTiO 3 -(Na 0.5 Bi 0.5 )TiO 3 The chemical expression of the material is xCoFe 2 o 4 / (1-x)0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 , where x is CoFe 2 o 4 The mass percentage of , and x = 0.2.

[0059] The above-mentioned CoFe 2 o 4 / BaTiO 3 -(Na 0.5 Bi 0.5 )TiO 3 The preparation method of material comprises the following steps:

[0060] (1) According to chemical communication 0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 will analyze pure BaCO 3 、TiO 2 、 Bi 2 o 3 、Na 2 CO 3 After preparation, it was mixed evenly by wet ball milling for 5 hours, then dried, sieved, briquetting, and then pre-fired at 920°C for 4 hours to obtain a block product, and then the block sample was crushed and passed through a 120-mesh sieve to obtain 0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 Powder;

[0061] (2) According to the general chemical formula CoFe 2 o 4 Weigh analytically pure Co 3 o 4 , Fe 2 o 3 After preparation, wet ball mill for 5 hours...

Embodiment 3

[0071] CoFe 2 o 4 / BaTiO 3 -(Na 0.5 Bi 0.5 )TiO 3 The chemical expression of the material is xCoFe 2 o 4 / (1-x)0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 , where x is CoFe 2 o 4 The mass percentage of x=0.3.

[0072] The above-mentioned CoFe 2 o 4 / BaTiO 3 -(Na 0.5 Bi 0.5 )TiO 3 The preparation method of material comprises the following steps:

[0073] (1) According to chemical communication 0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 will analyze pure BaCO 3 、TiO 2 、 Bi 2 o 3 、Na 2 CO 3 After preparation, it was mixed evenly by wet ball milling for 6 hours, then dried, sieved, briquetting, and then pre-fired at 900°C for 5 hours to obtain a block product, and then the block sample was crushed and passed through a 120-mesh sieve to obtain 0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 Powder;

[0074] (2) According to the general chemical formula CoFe 2 o 4 Weigh analytically pure Co 3 o 4 , Fe 2 o 3 After preparation, wet ball mill for 4 hours, then d...

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Abstract

The invention discloses a CoFe2O4/BaTiO3-(Na0.5Bi0.5)TiO3 material and a preparation method thereof. The preparation method comprises the following steps: preparing 0.65BaTiO3-0.35(Na0.5Bi0.5)TiO3 powder with barium carbonate, titania, bismuth oxide and sodium carbonate as raw materials, carrying out granulation on CoFe2O4 powder and the 0.65BaTiO3-0.35(Na0.5Bi0.5)TiO3 powder, carrying out compression moulding in a die according to a 2-2 compounding layering staking arrangement mode, discharging rubber, and calcining. According to the CoFe2O4/BaTiO3-(Na0.5Bi0.5)TiO3 material and the preparation method thereof disclosed by the invention, as a ferroelectric phase and a ferromagnetic phase are co-fired together in a layering compounding mode according to the 2-2 compounding layering staking arrangement mode, mutual reaction between the ferroelectric phase and the ferromagnetic phase can be effectively inhibited so as to keep respective characteristics, and the CoFe2O4/BaTiO3-(Na0.5Bi0.5)TiO3 material is good in both ferroelectricity and ferromagnetism.

Description

technical field [0001] The invention belongs to the field of material science and relates to a CoFe 2 o 4 / 0.65BaTiO 3 -0.35 (Na 0.5 Bi 0.5 )TiO 3 Materials and their preparation methods. Background technique [0002] With the continuous development of information technology and the miniaturization and multifunctionalization of devices, people's research interest in multifunctional materials with both current collection and magnetism is constantly increasing. Therefore, the miniaturization and miniaturization of components including ferroelectric dielectric materials and magnetic materials is an inevitable trend, and the magnetoelectric composite materials that integrate ferroelectricity and ferromagnetism have the same volume but can be used on circuits Has more functions. [0003] Multiferroic materials not only possess a variety of single ferroic properties (such as ferroelectricity, ferromagnetism, and ferroelasticity), but also can produce some new functions thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/26C04B35/622
Inventor 杨海波张戈林营朱建锋王芬
Owner SHAANXI UNIV OF SCI & TECH
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