A kind of Bi1−x Er x FeO3 films with potential excellent multiferroic performances
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Bi1−x Er x FeO3 (BE x FO, x = 0.07–0.12) films have been deposited on fluorine-doped SnO2 (FTO) substrates by a chemical solution deposition method (CSD). The structure and multiferroic properties were investigated. The results indicate that there is a structural transition from the typical rhombohedral-R3c:H (BiFeO3) to two-phase coexistence of rhombohedral-R3c:H and rhombohedral-R3m:R (BE x FO). The abundant Fe2+ are observed in BE x FO, which induces the larger leakage current. The BE0.09FO shows the ferroelectric switching current of 1.42 × 10−2 A and the enhanced magnetization (saturation magnetization M s ~ 2.60 emu/cm3). From the investigation, the BE x FO films will be expected to show the great multiferroic properties after reducing the leakage current.
KeywordsBiFeO3 Ferroelectric Property Chemical Solution Deposition Multiferroic Property Large Leakage Current
This work is supported by the Project of the National Natural Science Foundation of China (Grant No. 51372145); the Academic Leaders Funding Scheme of Shaanxi University of Science & Technology (2013XSD06); the Graduate Innovation Fund of Shaanxi University of Science & Technology (SUST-A04).
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