Preparation method of ferroferric oxide and lanthanum-doped bismuth titanate composite magnetoelectric film

A technology of triiron tetroxide and bismuth titanate is applied in the field of preparation of multiferroic magnetoelectric composite thin film materials, which can solve the problems of preparation technology and difficult oxidation conditions, achieve large remanent polarization, low preparation temperature, and expand research scope Effect

Inactive Publication Date: 2014-09-10
SOUTHEAST UNIV
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Problems solved by technology

[0004] So far, due to the difficulties in the preparation process and oxidation conditions of the experiment, Fe 3 o 4 and Bi 3.25 La 0.75 Ti 3 o 12 (BLT) compounded Fe 3 o 4 / Bi 3.25 La 0.75 Ti 3 o 12 (Fe 3 o 4 / BLT) magnetoelectric composite thin film materials, no relevant reports have been seen yet

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  • Preparation method of ferroferric oxide and lanthanum-doped bismuth titanate composite magnetoelectric film
  • Preparation method of ferroferric oxide and lanthanum-doped bismuth titanate composite magnetoelectric film

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Embodiment Construction

[0022] The preparation method of ferric oxide and bismuth titanate-doped lanthanum composite magnetoelectric thin film of the present invention is characterized in that the method comprises the following steps:

[0023] 1. Preparation of Fe 2 o 3 and Bi 3.25 La 0.75 T i3 o 12 (BLT) target

[0024] 1. Bi 3.25 La 0.75 Ti 3 O1 2 (BLT) target preparation

[0025] a) Ingredients: The reactant raw material is Bi 2 o 3 ,La 2 o 3 , TiO2; the three raw materials are mixed at a molar ratio of 13:3:24. Due to the volatility of Bi, an excessive amount of Bi is generally used in the experiment 2 o 3 To compensate for the loss of Bi, 5-20% more Bi2O3 is added to the raw material.

[0026] b) Put the mixed raw materials into the agate jar, add acetone into the ball mill jar, add agate balls, seal and fix it on the ball mill, the ball milling time is more than 15h, the longer the grinding time, the finer the BLT powder and the better the effect.

[0027] c) Press the ground r...

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Abstract

The invention relates to a preparation method of a ferroferric oxide and lanthanum-doped bismuth titanate composite magnetoelectric film, which is characterized in that a ferroelectric lanthanum-doped bismuth titanate film and a ferromagnetic ferroferric oxide film are effectively synthesized, thus preparing the multiferroic magnetoelectric composite film material. The preparation method comprises the following specific steps: 1, preparing Fe2O3 and Bi3.25La0.75Ti3O12 (BLT) target materials; and 2, using a pulse laser sputtering deposition system to prepare the Fe3O4 / BLT multiferroic magnetoelectric composite film on a Pt / Ti / SiO2 / Si substrate. The Fe3O4 / BLT multiferroic magnetoelectric composite film material fills up the blank of compounding Fe3O4 and BLT into the multiferroic magnetoelectric composite material and widens the research range of the magnetoelectric composite film material.

Description

technical field [0001] The invention is a method for preparing a multiferroic magnetoelectric composite thin film material by effectively synthesizing ferroelectric thin film bismuth titanate doped with lanthanum and ferrimagnetic thin film ferric oxide, which belongs to multiferroic The technical field of preparation of magnetic and electric composite thin film materials. Background technique [0002] Multiferroic materials not only have a single ferrotype (such as ferroelectricity, ferromagnetism, and ferroelasticity), but also produce new magnetoelectric effects due to the coupling and synergy between different ferrotypes. Novel information storage processing of magnetic integration effects and technologies such as magnetoelectric devices offer great potential application potential. Among them, magnetoelectric composite thin film materials have become one of the hotspots of many researchers due to their good microelectronic process compatibility and good performance. At...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/462C04B35/622
Inventor 吴秀梅翟亚孙弘扬欧慧灵
Owner SOUTHEAST UNIV
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