Journal
FERROELECTRICS
Volume 407, Issue -, Pages 134-139Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00150193.2010.484757
Keywords
Rare earth element; BaTiO3; dielectric properties; pure nitrogen
Funding
- Natural Science Foundation of China [50672067]
- Scientific and Technological Innovation Program of Shanghai [08JC1419100]
- Specialized Research Fund for the Doctoral Program of Higher Education [20070247010]
- Program for Young Excellent Talents in Tongji University
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This paper investigated dielectric properties of rare earth (Y, Gd, Yb)-doped barium titanate sintered in pure nitrogen. The difference in doping behaviors of intermediate rare-earth ions (Gd, Y, Yb) and their effects on the dielectric properties of barium titanate were investigated. The intermediate rare earth elements (Gd, Y, Yb) were substituted in the A-site of the perovskite lattice. The different rare earth element had a crucial effect on dielectric properties of rare-earth-doped BaTiO3. Gd-doped barium titanate had the largest dielectric constant (about 20000) and the largest dielectric loss (about 0.6), the smallest leakage current and no tunability. Y-doped specimen had the largest leakage current.
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