Stable self-polarization in Nd and Ti codoped BiFeOplus-plus">3 films
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- 作者：P. P. Lv ; X. M. Jiang ; J. Yan ; G. D. Hu
- 刊名：Journal of Materials Science: Materials in Electronics
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：28
- 期：2
- 页码：2233-2240
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
- 出版者：Springer US
- ISSN：1573-482X
- 卷排序：28
文摘
Nd (3 %) and Ti (2 %) codoped BiFeO3 (BNFTO) films with different layer and film thicknesses were deposited on LaNiO3(100)/Si substrates using a metal organic decomposition method. The BNFTO films show a highly (100)-preferred orientation. The hysteresis loops of both films are asymmetric with negatively imprinted polarizations, suggesting that both samples are self-polarized regardless of the layer and film thicknesses. More importantly, the P–phasisTypeItalic ">E hysteresis loops for both films can recover to their asymmetric shapes after high-field measurements, indicating the self-polarizations are quite stable. These results are explained based on the stabilization of the defect complexes. The effects of the self-polarization on the leakage, dielectric and piezoelectric properties of the BNFTO films are investigated.