Structural and dielectric properties of Nd{sup 3+}-doped Ba{sub 0.77}Ca{sub 0.23}TiO{sub 3} ceramics
- Grupo de Crescimento de Cristais e Materiais Ceramicos, Instituto de Fisica de Sao Carlos, Universidade de Sao Paulo (USP), Caixa Postal 369, 13560-970 Sao Carlos, Sao Paulo (Brazil)
The structural and dielectric properties of both pure and Nd{sup 3+}-doped Ba{sub 0.77}Ca{sub 0.23}TiO{sub 3} (BCT23) ceramics obtained from solid-state reaction were investigated. The BCT23 ceramics sintered at 1300 deg. C for 3 h showed a dense microstructure without the presence of secondary phases. The use of Nd{sup 3+} as a dopant affected the microstructure of these ceramics. Samples prepared with Nd{sup 3+} exhibit a more homogeneous microstructure without a liquid phase on the grain boundaries. The dielectric constant and Raman scattering measurements indicate that the Curie temperature of the ferroelectric phase transition depends on Nd{sup 3+} content. It shifts toward lower temperatures with Nd{sup 3+} addition.
- OSTI ID:
- 20709663
- Journal Information:
- Journal of Applied Physics, Vol. 97, Issue 10; Other Information: DOI: 10.1063/1.1901834; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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