2-2 type ferroelectrics-ferrite multilayered compound magnetoelectricity material and the corresponding preparation method

A multi-layer composite and magnetoelectric material technology, applied in the manufacture/processing of electromagnetic devices, manufacture/assembly of piezoelectric/electrostrictive devices, material selection, etc., can solve problems affecting the magnetoelectric properties of materials, and achieve Improve the magnetoelectric coefficient, ensure the stress transfer, and the effect of simple process

Inactive Publication Date: 2008-07-09
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, there are still many problems to be solved, including the matching of the thermal expansion coefficient of the two-phase materials, the chemical reaction between the two phases, and the bonding strength of the interface between the two phases. If these problems cannot be solved, they will seriously affect the magnetoelectricity of the material. performance

Method used

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  • 2-2 type ferroelectrics-ferrite multilayered compound magnetoelectricity material and the corresponding preparation method
  • 2-2 type ferroelectrics-ferrite multilayered compound magnetoelectricity material and the corresponding preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, thickness ratio (t p / t c ) is a 1:1 PZT / CFO multilayer composite (see Figures 1 and 2)

[0039] (1) Preparation of PZT thin-layer green body

[0040] First prepare PZT powder. Mix the analytically pure yellow lead oxide, zirconia and titanium dioxide according to the molar ratio of 1:0.52:0.48, use absolute ethanol as the medium, carry out ball milling, and then dry; put the mixed powder after drying into the resistance furnace , calcined in the temperature range of 700-1100°C, and obtained PbZr through solid-state reaction 0.52 Ti 0.48 o 3 The powder has a particle size of 200-500nm.

[0041] A PZT thin layer green body is then prepared. Use the PZT powder prepared by the above method as raw material, add ethanol and butanone as organic solvent, add dibutyl phthalate as plasticizer, add castor oil as dispersant, and add polyvinyl butyral as binder Agents were mixed by ball milling to obtain a uniform slurry. Wherein, the add-on of ethanol is 70%...

Embodiment 2

[0050] Embodiment 2, thickness ratio (t p / t c ) is a 1:2 PZT / CFO multilayer composite

[0051] (1) Preparation of PZT thin-layer green body

[0052] First prepare PZT powder. Mix the analytically pure yellow lead oxide, zirconia and titanium dioxide according to the molar ratio of 1:0.52:0.48, use absolute ethanol as the medium, carry out ball milling, and then dry; put the mixed powder after drying into the resistance furnace , calcined in the temperature range of 700-1100°C, and obtained PbZr through solid-state reaction 0.52 Ti 0.48 o 3 The powder has a particle size of 200-500nm.

[0053] A PZT thin layer green body is then prepared. Use the PZT powder prepared by the above method as raw material, add ethanol and butanone as organic solvent, add dibutyl phthalate as plasticizer, add castor oil as dispersant, and add polyvinyl butyral as binder Agents were mixed by ball milling to obtain a uniform slurry. Wherein, the add-on of ethanol is 70% of PZT powder quality...

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Abstract

The invention relates to a 2-2 type ferroelectrics-ferrite multilayer composite magnetoelectric material and the preparation method, which relates to a ferroelectrics-ferrite multilayer composite magnetoelectric material. The invention consists of a ferroelectrics and a ferrite, the ferroelectrics and the ferrite materials are composed by adopting a layered alternate arrangement mode, wherein, the ferroelectrics material selects a lead zirconate titanate PbZr0.52Ti0.48O3 ceramics, and the ferrite selects a cobalt ferrite CoFe2O4 ferrite ceramics. An organic solvent, a plasticizer, a dispersant and a bonding agent are added in PZT powder and are ball milled and mixed to obtain a paste; the paste is treated with screening, defoaming and doctor blade casting to obtain an electrolyte thin film green, demoulding and cutting are carried out; the organic solvent, the plasticizer, the dispersant and the bonding agent are added in CFO powder and are ball milled and mixed to obtain the paste; the paste is treated with screening, defoaming and doctor blade casting to obtain the electrolyte thin film green, the demoulding and cutting are carried out; the PZT green and the CFO green are overlapped alternatively, a multi-layer composite green material is obtained by heating and pressurizing, roasting and hydrostatic pressure processing are carried out, and then sintering and molding are carried out for preparation.

Description

technical field [0001] The invention relates to a ferroelectric-ferrite multilayer composite material, in particular to a 2-2 type multilayer composite material with magnetoelectric properties and its 2-2 type prepared by tape casting and co-firing technology. Type ferroelectric-ferrite multilayer composite magnetoelectric material and its preparation method. Background technique [0002] Magnetoelectric materials are a new type of multifunctional materials that have developed rapidly in recent decades (W. Eerenstein, N.D. Mathur, J.F. Scott, Multiferroic and magnetoelectric materials. Nature, 442(7104): 759-765, 2006). Magnetoelectric materials are materials with magnetoelectric effect. Magnetoelectric effect is a typical ferroelectric coupling effect. Applying a magnetic field to a magnetoelectric material can generate a corresponding electric field; conversely, applying a certain electric field can generate a corresponding magnetic field. Since this coupling effect has g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L43/10H01L43/12H01L41/187H01L41/22H01L41/273
Inventor 薛昊熊兆贤冯保林
Owner XIAMEN UNIV
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