Preparation method of high-orientation Ca0.4Sr0.6Bi4Ti4O15 template grain film

A high-orientation, template technology, applied in electrical components, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., can solve problems such as unfavorable applications, difficulty in non-destructive separation of films and substrates, and difficulty in tailoring ferroelectric films. Achieve the effect of low cost, smooth grain and good orientation

Inactive Publication Date: 2013-05-22
SHANDONG WOMENS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still some deficiencies in the preparation method of the template grain film: at this stage, the films reported at home and abroad are more than those deposited on silicon and platinum substrates, the prepared ferroelectric film is not easy to cut, and the non-destructive separation of the film and the substrate More difficult, not conducive to practical application

Method used

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  • Preparation method of high-orientation Ca0.4Sr0.6Bi4Ti4O15 template grain film
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  • Preparation method of high-orientation Ca0.4Sr0.6Bi4Ti4O15 template grain film

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Embodiment 1

[0025] A highly oriented Ca 0.4 Sr 0.6 Bi 4 Ti 4 o 15 The preparation method of the template grain film, the specific steps are as follows:

[0026] (1) Prepare solution A by mixing 10ml of tetrabutyl titanate and acetylacetone at a ratio of 1:1 by volume, put the beaker containing the solution in 0°C ice water and stir for 12h to obtain a clear yellow-brown transparent A solution; Weigh bismuth nitrate (15.5224g), strontium acetate (0.9465g), calcium nitrate (0.6870g) and join in the solvent ethylene glycol (52ml), stir 12h on the magnetic stirrer, obtain clear and transparent B solution. Then slowly add solution B into solution A, and stir the mixed solution thoroughly for 48 hours to obtain pale yellow Ca 0.4 Sr 0.6 Bi 4 Ti 4 o 15 Precursor solution C, the C solution is equally divided into two parts D and E;

[0027] (2) Using the method of self-propagating combustion (the temperature causing combustion is 300°C, the specific operation is: pour the solution evenly...

Embodiment 2

[0033] The preparation method is the same as in Example 1, and the rotating speed of the glue homogenizer in step (3) is adjusted, adopting the glue homogenization speed of 3250r / min and the glue homogenization time of 30s, and all the other conditions are the same as in Example 1. When the Ca 0.4 Sr 0.6 Bi 4 Ti 4 o 15 The SEM photo of the template grain film is as follows figure 2 As shown, the surface of the film has no cracks, the particles are clear, and the crystal grains are well crystallized. A high-quality template grain film was successfully prepared on the soluble substrate NaCl.

Embodiment 3

[0035] The preparation method is the same as in Example 1, the layer-by-layer annealing heat treatment process in step (4) is adjusted, and the thermal decomposition temperature and annealing temperature in the heat treatment process are changed. When the temperature is 700°C and the annealing time is 300s, other conditions are the same as in Example 1. The prepared Ca 0.4 Sr 0.6 Bi 4 Ti 4 o 15 The atomic force of the template film is as image 3 As shown, the crystal grains on the surface of the template grain film are relatively smooth, and the orientation of the grain crystals is better. A highly oriented template grain film was successfully prepared on the soluble substrate NaCl.

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Abstract

The invention relates to a preparation method of high-orientation Ca0.4Sr0.6Bi4Ti4O15 template grain film. The preparation method comprises the steps of: firstly preparing Ca0.4Sr0.6Bi4Ti4O15 precursor solution and powder, preheating a NaCl substrate, carrying out spin coating with the precursor solution, carrying out annealing heat treatment on the coated NaCl substrate by adopting a layer-by-layer annealing process, dissolving film substrate namely NaCl substrate with deionized water to obtain pure Ca0.4Sr0.6Bi4Ti4O15 template grain film, pressing the pure template grain film into Ca0.4Sr0.6Bi4Ti4O15 powder to prepare a block material, and sintering the block material at 1000-1250 DEG C to prepare the high-orientation Ca0.4Sr0.6Bi4Ti4O15 template grain film material. According to the invention, the preparation method is simple in process, low in cost, convenient for operation and control in preparing process; the prepared material is level in surface grains and good in grain crystal orientation; and non-destructive separation of the film and the substrate can be realized.

Description

technical field [0001] The present invention relates to the preparation of a kind of ceramic material, specifically a kind of highly oriented Ca 0.4 Sr 0.6 Bi 4 Ti 4 o 15 A method for preparing a template grain film. Background technique [0002] Ca 0.4 Sr 0.6 Bi 4 Ti 4 o 15 The material has a series of important properties such as ferroelectricity, piezoelectricity, pyroelectricity, electro-optic, acousto-optic and nonlinear optics, and has high remanent polarization, low coercive field strength and high Curie temperature , low dielectric loss and other advantages, it has broad application prospects in microelectronics, optoelectronics, integrated optics and microelectromechanical systems (MEMS). [0003] Ceramic grain orientation technology refers to the control of special process methods to make the ceramic grains with random orientations arranged in an orderly manner, so that certain physical properties of the material can be close to those of single crystals. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/187C04B35/475C04B35/622
Inventor 范素华张丰庆陈杨
Owner SHANDONG WOMENS UNIV
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