Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 784, Issue -, Pages 117-124Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.12.381
Keywords
BiFeO3; Substitution; Magnetic property; Ferroelectric property
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Funding
- National Natural Science Foundation of China [51372119, 51602161]
- Natural Science Foundation of Jiangsu Province, China [BM2012010]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [YX03001]
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Multiferroic Dy and transition metals (Cr, Mn, Ni) co-doped BiFeO3 ceramics were successfully synthesized by a solid-state method, and the influence on the magnetic and ferroelectric properties were investigated. Compared with Bi0.95Dy0.05Fe0.95Mn0.05O3, Bi0.95Dy0.05Fe0.95Cr0.05O3 and Bi0.95Dy0.05Fe0.95Ni0.05O3 ceramics can significantly improve the magnetic properties. The significant enhancement of magnetic properties should be related to the local ferromagnetic coupling from Cr ions (Ni ions) and Fe ions, which have already been proved by first-principles calculations. Meanwhile, both experimental and theoretical studies reveal the Dy substitution can effectively enhance the ferroelectric properties of BiFeO3. Leakage current and conduction mechanism analyses reveal that the improved ferroelectric properties are mainly attributed to the reduced oxygen vacancies. (C) 2019 Elsevier B.V. All rights reserved.
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