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Bismuth ferrite-strontium bismuth titanatemultiferroic composite film and preparation method thereof

A composite film, strontium bismuth titanium technology, applied in the field of electronic ceramics, can solve the problems that the ferroelectric domain cannot be reversed, the ferroelectric performance cannot be displayed, and the saturated polarization cannot be obtained, so as to reduce the leakage current density, improve the stability, Effect of Improving Ferroelectric Properties

Inactive Publication Date: 2014-01-08
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

Due to the severe leakage current, applied on BiFeO 3 The effective electric field on the film will be very small, resulting in the failure of the ferroelectric domain to flip, and even the material will be broken down at a very low voltage, and the saturated polarization cannot be obtained, so its excellent ferroelectric properties cannot be displayed.

Method used

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  • Bismuth ferrite-strontium bismuth titanatemultiferroic composite film and preparation method thereof
  • Bismuth ferrite-strontium bismuth titanatemultiferroic composite film and preparation method thereof
  • Bismuth ferrite-strontium bismuth titanatemultiferroic composite film and preparation method thereof

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Embodiment Construction

[0027] The present invention will be described in detail below through specific examples.

[0028] The bismuth ferrite-strontium bismuth titanium multiferroic composite film includes the following raw materials: iron nitrate, bismuth nitrate, tetrabutyl titanate and strontium acetate.

[0029] The preparation method of the bismuth ferrite-strontium bismuth titanium multiferroic composite film comprises the following steps:

[0030] (1) Prepare the precursor solution of bismuth ferrite: first weigh 3.6727g of powdered ferric nitrate and 4.8753g of bismuth nitrate, then add 10ml of acetylacetone as a chelating agent, and then add 10ml of ethylene glycol as a solvent; use a magnetic stirrer Fully stir for 7 hours until dissolved; finally add 10ml of glacial acetic acid to adjust the pH value to 0.3, and obtain a transparent, uniform and stable red bismuth ferrite precursor solution after stirring for 24 hours. The concentration of the bismuth ferrite precursor solution is 0.3 mol...

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Abstract

The invention belongs to the technical field of electronic ceramics, and specifically relates to a bismuth ferrite-strontium bismuth titanatemultiferroic composite film and a preparation method thereof. The bismuth ferrite-strontium bismuth titanatemultiferroic composite film comprises the following raw materials: ferric nitrate, bismuth nitrate, tetrabutyltitanate and strontium acetate. The bismuth ferrite-strontium bismuth titanatemultiferroic composite film has stable structure, and is substantially reduced in leakage current density and strengthened in ferroelectric performance.

Description

technical field [0001] The invention belongs to the technical field of electronic ceramics, and in particular relates to a bismuth ferrite-strontium bismuth titanium multiferroic composite film and a preparation method thereof. Background technique [0002] Materials that have two or more properties of ferroelectricity, ferromagnetism and ferroelasticity at a certain temperature are called multiferroic materials. The material complements the deficiencies of pure (anti-)ferroelectric or (anti-)ferromagnetic materials while exhibiting both electrical and magnetic ordering. Due to the coexistence of ferroelectricity and magnetism, multiferroic materials have magnetoelectric effects, that is, they can generate magnetic fields under the induction of electric fields, and at the same time generate electrical polarization under the action of magnetic fields. Based on the special properties of multiferroic materials, they can be used in magnetic storage The application prospect of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/00C01G29/00
Inventor 张丰庆范素华岳雪涛田清波
Owner SHANDONG JIANZHU UNIV
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