期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 27, 期 2-3, 页码 1077-1082出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2006.05.073
关键词
BaTiO3; coating; dielectric properties; mixing; MgO
Effects of MgO coating on microstructure and dielectric properties of BaTiO3 have been studied compared with mechanically MgO mixed BaTiO3. MgO-coated BaTiO3 particles were prepared by a homogeneous precipitation method using MgCl2.6H(2)O and urea. TEM micrograph showed homogeneous adsorption of MgO particles on the BaTiO3 surfaces. MgO coated and mixed samples showed different dielectric behaviors because uniformity of microstructures and shape of core-shell structure were different each other. Bulk density was slightly decreased with increasing MgO content. EPMA analysis indicates that microstructures and dielectric behaviors were affected by the distribution of MgO in the BaTiO3 matrix. (c) 2006 Elsevier Ltd. All rights reserved.
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