期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 453, 期 1-2, 页码 20-23出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2006.11.065
关键词
multiferroic; sol-gel; ferroelectricity; ferromagnetism
Bi1-xSrxMn0.2Fe0.8O3 ceramics have been prepared by sol-gel process, and their physical properties have been studied. These samples exhibit enhanced ferromagnetization without disturbing their ferroelectric properties. The X-ray photoelectron spectroscopy (XPS) results reveal the origin of spontaneous magnetization in these samples. Adding Sr2+ ions to BiMn0.2Fe0.8O3 system requires charge compensation, which can be achieved by formation of Mn4+. The statistical distribution of Mn3+ and Mn4+ ions in the octahedral leads to net magnetization and ferromagnetism. (C) 2007 Published by Elsevier B.V.
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