Journal
FERROELECTRICS LETTERS SECTION
Volume 45, Issue 1-3, Pages 30-37Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/07315171.2018.1499357
Keywords
Bi0.8Gd0.2Fe0.95Ti0.05O3; multiferroics; orthorhombic phase; defects
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Funding
- National High Technology Research and Development Program of China (863 Program) [2013AA030903]
- Key Project of Department of Education, Jiangxi Province [GJJ171022]
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Bi0.8Gd0.2Fe0.95Ti0.05O3 (BGFT) multiferroic ceramics were prepared by a solid-state reaction, and their sintering, microstructure, dielectric and magnetic properties were studied. Experimental results show that BGFT ceramics sintered at 980 degrees C possess a pure orthorhombic (space group, Pnma) structure, and these ceramics possess high relative theoretical density (similar to 95%), low leakage current density (10(6) A/cm(2)). The magnetic and electric measurements show the coexistence of ferroelectric and weak ferromagnetic in BGFT ceramics. The results of the Rietveld refinement for BGFT ceramics reveal the existence of bismuth and oxygen vacancies, and these vacancies have an important influence on the electric and magnetic properties.
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