Magnetoelectric Effect in Multiferroic Perovskite-Oxide Composites

Manabu Gomi; K. Ban; Naoya Nishimura; Takeshi Yokota

doi:10.4028/www.scientific.net/AST.45.2514

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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 45Magnetoelectric Effect in Multiferroic...

Magnetoelectric Effect in Multiferroic Perovskite-Oxide Composites

Abstract:

Magnetic, dielectric properties and magnetoelectric effect of ceramics with a composition of 0.9 BaTiO3-0.1 LaMnO3 have been investigated. X-ray diffraction measurements showed that the sintered ceramics are composites containing a small amount of (La, Ba)MnO3 phase in the BaTiO3 matrix. These composites were multiferroic, having ferromagnetic and ferroelectric Curie temperatures of 330 K and 392 K respectively. We found that the composite sintered at 1150 °C exhibits a reduction of spontaneous magnetization as large as 55 % at room temperature when an electric field of 1.4 KV/mm is applied. This reduction is probably ascribed to a change of hole concentration distribution in the precipitated ferromagnetic (La, Ba)MnO3 and the resultant decrease of ferromagnetic Curie temperature.

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Advances in Science and Technology (Volume 45)

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2514-2519

DOI:

https://doi.org/10.4028/www.scientific.net/AST.45.2514

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Online since:

October 2006

Authors:

Manabu Gomi, K. Ban, Naoya Nishimura, Takeshi Yokota

Keywords:

Composite, Magneto-Electric Effect, Manganite, Multi-Ferroic Material

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