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Title: Aging-induced double ferroelectric hysteresis loops in BiFeO₃multiferroic ceramic
Authors: Yuan, G. L.
Yang, Y.
Or, Derek Siu-wing
Subjects: Ageing
Bismuth compounds
Electric domains
Ferroelectric ceramics
Ferroelectric Curie temperature
Issue Date: 17-Sep-2007
Publisher: American Institute of Physics
Source: Applied physics letters, 17 Sept. 2007, v. 91, no. 12, 122907, p. 1-3.
Abstract: Double ferroelectric hysteresis (P-E) loops are observed in aged BiFeO₃multiferroic ceramic at room temperature and are explained according to an aging effect driven by charged defects with high activation energy. The aged BiFeO₃shows R3c defect symmetry and allows a nonzero charged defect-induced polarization (P[sub D]) below the ferroelectric Curie temperature. This P[sub D] is strong enough to recover the switched 180° ferroelectric domains upon the removal of E, but it is rather weak to effectively switch back the 71°/109° ferroelectric domains. As a result, the traits of the double P-E loops weaken with increasing the maximum E from 121 to 167 kV/cm.
Rights: © 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in G. L. Yuan, Y. Yang & Siu Wing Or, Appl. Phys. Lett. 91, 122907 (2007) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.2786013
ISSN: 0003-6951 (print)
1077-3118 (online)
Appears in Collections:AP Journal/Magazine Articles

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