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Layered structure ferrotitanium lanthanum bismuth cobaltate ceramic with multiferroic and preparation method thereof

A technology of lanthanum bismuth iron cobaltate and layered structure is applied in the field of preparation of oxide ceramic materials, which can solve the problems of lack of sight, and achieve the effects of improving ferroelectric and magnetic properties, good stability and facilitating industrial production.

Inactive Publication Date: 2010-05-12
YANGZHOU UNIV
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Problems solved by technology

Regarding the material of BLFCT, we have not seen the literature and patent reports of related work.

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  • Layered structure ferrotitanium lanthanum bismuth cobaltate ceramic with multiferroic and preparation method thereof
  • Layered structure ferrotitanium lanthanum bismuth cobaltate ceramic with multiferroic and preparation method thereof
  • Layered structure ferrotitanium lanthanum bismuth cobaltate ceramic with multiferroic and preparation method thereof

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Embodiment Construction

[0023] The preparation process and condition that embodiment adopts:

[0024] (1) Preparation of sample raw materials:

[0025] 1) Analytical pure bismuth oxide (Bi 2 o 3 ), analytically pure ferric oxide (Fe 2 o 3 ), analytically pure lanthanum oxide (LaO 2 ), analytically pure cobalt trioxide (Co 2 o 3 ) and spectroscopically pure titanium oxide (TiO 2 ) as a raw material, the raw materials all adopt the products of Shanghai Chemical Reagent Company, and the raw materials were baked at 110° C. in an oven for 8 hours before weighing.

[0026] 2) Preparation of BLT powder: The weighed bismuth oxide, lanthanum oxide and titanium oxide (shown in Table 1) are ball milled with absolute ethanol as a medium, dried after 24 hours of ball milling, and put into an alumina crucible. Compacting lightly, the synthesis was carried out in air at temperatures of 760°C, 780°C, and 800°C for 8 hours, 16 hours, and 24 hours, respectively. Ball milling and drying were performed after each...

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Abstract

The invention relates to a layered structure ferrotitanium lanthanum bismuth cobaltate ceramic with multiferroic and a preparation method thereof, relating to the technical field of oxide ceramic material preparation. The method comprises the following steps: firstly preparing Bi3.25L0.75Ti3O15 powder, then implanting BiCoO3 and BiFeO3 in Bi3.25L0.75Ti3O15 to form Bi4.25L0.75Fe0.5Co0.5Ti3O15 ceramic. In the obtained BLFCT sample, the octahedral arrangement of Fe-O and Co-O is relatively orderly so that the local coupling between Fe-O-Co and La-O-Co / Fe can be obtained and the ferroelectric property and magnetic property of the sample can be improved. The ceramic of the invention has simple and reasonable technology and good compatibility with the current technology, and the sample preparation temperature is much lower than the preparation temperature of the current technology so as to greatly reduce the energy consumption, thus the ceramic is applicable to industrial production.

Description

technical field [0001] The invention relates to the technical field of preparation of oxide ceramic materials. Background technique [0002] Magnetoelectric multiferroic materials refer to materials that exhibit ferroelectric order and ferromagnetic / antiferromagnetic order at the same time in a certain temperature range, and there is a certain coupling between them. Recently, this material has attracted more and more attention. On the one hand, it can not only be used in the research and development of ferroelectric and magnetic devices, but more importantly, it can use the coupling between magnetoelectricity to provide additional advantages for the design and application of devices. One degree of freedom, thus showing extremely attractive application prospects in emerging spintronics, multi-state information storage, electrically driven ferromagnetic resonators, and magnetically regulated piezoelectric sensors. Among the multiferroic materials discovered so far, the simple...

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Application Information

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IPC IPC(8): C04B35/453C04B35/622
Inventor 陈小兵毛翔宇王伟陆亚林
Owner YANGZHOU UNIV
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