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Bismuth calcium titanate-based luminous piezoelectric ceramic material and preparation method

A bismuth calcium titanate-based, piezoelectric ceramic technology, applied in the field of electronic functional materials, to achieve excellent photoelectric performance and wide application prospects

Inactive Publication Date: 2010-12-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current reports on the optical properties of bismuth calcium titanate-based piezoelectric materials are limited to thin film materials.

Method used

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  • Bismuth calcium titanate-based luminous piezoelectric ceramic material and preparation method
  • Bismuth calcium titanate-based luminous piezoelectric ceramic material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] to prepare CaBi 4-0.005 PR 0.005 Ti 4 o 15 、CaBi 4-0.01 PR 0.01 Ti 4 o 15 、CaBi 4-0.015 PR 0.015 Ti 4 o 15 、CaBi 4-0.02 PR 0.02 Ti 4 o 15 For example, the raw material is CaCO 3 , Bi 2 o 3 ,TiO 2 , Pr 6 o 11 , according to the general chemical formula CaBi 4-0.005 PR 0.005 Ti 4 o 15 、CaBi 4-0.01 PR 0.01 Ti 4 o 15 、CaBi 4-0.015 PR 0.015 Ti 4 o 15 、CaBi 4-0.02 PR 0.02 Ti 4 o 15 The stoichiometric ratio of Ca, Bi, Ti and R in the formula is to weigh the raw materials, add absolute ethanol or deionized water after weighing the raw materials, grind them in a mortar and mix well to get powder A 1 、A 2 、A 3 、A 4 , wherein the mass ratio of the absolute ethanol or deionized water to the raw material mixture is 1-3:1; the mass ratio of the ball mill zirconia ball to the raw material mixture is 1-1.5:1. Powder A 1 、A 2 、A 3 、A 4 Place them in alumina crucibles for pre-firing respectively. The pre-firing temperature is 850°C, and the heat...

Embodiment 2

[0036] to prepare Ca 1.5 Bi 4-0.01 PR 0.01 Ti 4.5 o 16.5 For example, the raw material is CaCO 3 , Bi 2 o 3 ,TiO 2 , Pr 6 o 11 , by formula Ca 1.5 Bi 4-0.01 PR 0.01 Ti 4 o 16.5 Ratio of elements The selected raw materials were weighed, the pre-firing temperature was 900°C, the holding temperature of the ceramic green sheet after debonding treatment was 1200°C, and the rest of the experimental conditions were the same as in Example 1.

[0037] It can be seen from the test that the final sample obtained in this example is the luminescent piezoelectric ceramic material Ca in the present invention. 1.5 Bi 4-0.01 PR 0.01 Ti 4.5 o 16.5 ;

[0038] All the luminescent piezoelectric ceramic materials in this embodiment can be excited by waves in three bands of ultraviolet light (300nm-430nm), blue light (440nm-510nm) or green light (550nm-570nm).

Embodiment 3

[0040] to prepare Ca 2 Bi 4-0.02 PR 0.02 Ti 5 o 18 For example, the raw material is CaCO 3 , Bi 2 o 3 ,TiO 2 , Pr 6 o 11 , by formula Ca 2 Bi 4-0.02 PR 0.02 Ti 5 o 18 Ratio of elements The selected raw materials were weighed, the pre-firing temperature was 950°C, the holding temperature of the ceramic green sheet after debonding treatment was 1200°C, and the rest of the experimental conditions were the same as in Example 1.

[0041] It can be seen through detection that the final sample obtained in this embodiment is the luminescent piezoelectric ceramic material Ca in the present invention. 2 Bi 4-0.02 PR 0.02 Ti 5 o 18 ;

[0042] All the luminescent piezoelectric ceramic materials in this embodiment can be excited by waves in three bands of ultraviolet light (300nm-430nm), blue light (440nm-510nm) or green light (550nm-570nm).

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Abstract

The invention relates to the field of electronic functional material, in particular to a bismuth calcium titanate-based luminous piezoelectric ceramic material and a preparation method thereof. The chemical components of the bismuth calcium titanate-based luminous piezoelectric ceramic material accord with a chemical general formula CaxBi4-yRyTi3+xO12+3x, wherein x is more than or equal to 1 and less than or equal to 2, y is more than or equal to 0.0001 and less than or equal to 0.5, and R is selected from one or more of Pr, Gd, Er, Dy, Tm, Ho, Eu, Yb and Tb. The ceramic material has ferroelectric, piezoelectric and dielectric properties and photoluminescence property at the same time, and belongs to a novel multifunctional material. The bismuth calcium titanate-based luminous piezoelectric ceramic material has excellent photoelectric property, and has wide application prospect in the fields of photoelectric integration, micro electro-mechanics, photoelectric sensing, LED technology and the like.

Description

technical field [0001] The invention relates to the field of electronic functional materials, in particular to a bismuth calcium titanate-based luminescent piezoelectric ceramic material and a preparation method thereof. Background technique [0002] With the continuous development of high-tech, new material technology has become a hot field of exploration and research by scholars from all over the world. Piezoelectric materials are an important class of electronic functional materials, which are widely used in high-tech fields such as information, laser, navigation and biology. In order to adapt to the development of today's high-tech and meet the requirements of functionalization, miniaturization and intelligence of piezoelectric materials, scholars at home and abroad have actively explored and expanded their original properties while conducting in-depth research and continuously improving the original properties of piezoelectric materials. new features. Studies have sho...

Claims

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Application Information

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IPC IPC(8): C04B35/475C04B35/622
Inventor 王旭升彭登峰李艳霞张君诚唐棉棉
Owner TONGJI UNIV
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