Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 32, Pages 8144-8148Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.05.083
Keywords
Ferroelectricity; Ferrimagnetism; BiFeO3
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Funding
- National Science Foundation of China [51002060]
- Foundation from the ministry of the National Education [309020, 20090142120069]
- foundation Research funds for the central Universities [2010ZD006, 2010QN012]
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The structure, ferroelectric and magnetic properties of (1 - x) BiFeO3-xBi(0.5)Na(0.5)TiO(3) (x = 0.37) solid solution fabricated by a sol-gel method have been investigated. X-ray diffraction and Raman spectroscopy measurements show a single-phase perovskite structure with no impurities identified. Compared with pure BiFeO3, the coexistence of ferroelectricity and ferrimagnetism have been observed at room temperature for the solution with remnant polarization P-r = 1.41 mu C/cm(2) and remnant magnetization M-r = 0.054 emu/g. Importantly, a magnetic transition from ferrimagnetic (FM) ordering to paramagnetic (PM) state is observed, with Curie temperature T-C similar to 330 K, being explained in terms of the suppression of cycloid spin configuration by the structural distortion. (C) 2011 Elsevier B. V. All rights reserved.
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