NTCR behavior of Sm-substituted barium zirconium titanate nanocrystalline solid solution

Sagar R.; Madolappa S.; Raibagkar R.L.

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NTCR behavior of Sm-substituted barium zirconium titanate nanocrystalline solid solution

机译：NTCR behavior of Sm-substituted barium zirconium titanate nanocrystalline solid solution

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Ceramic solid solution of nanocrystalline barium zirconium titanate in the form of Ba(Zr_(0.52)Ti_(0.48))O_3 substituted by samarium (Sm~(3+)) was prepared using the conventional solid state reaction method. The phase assemblage analyzed by the X-ray diffraction technique was fitted for cubic-crystal-symmetry. The change in the grain size depicted the influence of Sm~(3+) ions on the microstructure. The electrical behavior was studied in the temperature range from 323 to 773 K. The sintered samples exhibited a negative temperature coefficient of resistance (NTCR) and superior semiconducting behavior above 513 K. Addition of Sm ~(3+) increased the room temperature resistivity of Ba(Zr _(0.52)Ti_(0.48))O_3 solid solution. The results obtained from the thermoelectric power measurement confirm electrons as the majority charge carriers

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《Solid State Communications》 |2011年第24期|1949-1952|共4页
作者
Sagar R.; Madolappa S.; Raibagkar R.L.;
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作者单位

Department of Post Graduate Studies, Research in Materials Science, Gulbarga University, Gulbarga-585 106, Karnataka State, India;

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正文语种英语
中图分类固体物理学;
关键词
A. Nanocrystalline Ba(Zr_(0.52)Ti_(0.48))O_3 solid solution; A. Sm~(3+) substitution; D. NTCR behavior; E. Seebeck coefficient;

NTCR behavior of Sm-substituted barium zirconium titanate nanocrystalline solid solution

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