Simultaneously enhanced ferroelectric and magnetic properties in 0.675BiFe1−x Cr x O3–0.325PbTiO3 (x = 0–0.05) ceramics
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- 作者：Xian-Zhu Deng ; Ji Zhang ; Shan-Tao Zhang
- 刊名：Journal of Materials Science: Materials in Electronics
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：28
- 期：3
- 页码：2435-2441
- 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
Multiferroic ceramics of 0.675BiFe1−xCrxO3–0.325PbTiO3 (x = 0, 0.01, 0.025, 0.05) were prepared and comparatively investigated. The rhombohedral–tetragonal morphotropic phase boundary (MPB) was formed in 0.675BiFeO3–0.325PbTiO3. The B-site Cr-substitution changes the structure from MPB to rhombohedral phase gradually, accompanied with monotonously decreased ferroelectric Curie temperature and average grain size. More interestingly, Such Cr-substitution enhances room temperature ferroelectric and magnetic properties simultaneously. The underlying mechanism is mainly attributed to the substitution enhanced local Fe3+–Cr3+ magnetic interaction and the suppressed oxygen vacancy effect. We believe these results are helpful supplements for optimizing structures and room temperature multiferroic properties of BiFeO3-based materials.