期刊
CHINESE SCIENCE BULLETIN
卷 55, 期 4-5, 页码 452-456出版社
SCIENCE PRESS
DOI: 10.1007/s11434-009-0293-1
关键词
multiferroic; BiFeO3; Y2O3; doped
资金
- Natural Science Foundation of Fujian Province [2008J0167]
- State Key Laboratory of New Ceramics & Fine Processing.
Bismuth ferrite, BiFeO3, is an important multiferroic material, which simultaneously exhibits ferroelectric ordering and antiferromagnetic ordering in bulk form. Samples of Bi1-x Y (x) FeO3 (x=0, 0.05, 0.10, 0.15 and 0.20) were prepared by conventional solid state reaction. By X-ray diffraction and Raman scattering spectra, the crystal structures of the samples were identified as rhombohedral with R3c space group, in addition to a second phase at xa (c) 3/40.05. Multiferroic properties of the samples were also measured. With the increasing of Y content, the relative dielectric constants of the samples increased gradually, while the loss tangents firstly decreased and then began to increase. Meanwhile, the saturation magnetization values were significantly enhanced, namely 0.1440, 0.7468, 1.9217, 3.3309 and 6.2774 emu/g at 300 K for x=0, 0.05, 0.10, 0.15 and 0.20, respectively.
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