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摘要
The effect of grain orientation on the dielectric and electrical properties of SrBi4Ti4O15 ceramics are studied by impedance and modulus spectroscopy. The degree of orientation calculated from the X-ray diffraction pattern is found to be 94.2% along the c-axis of the crystal structure. The ratio of permittivity along the perpendicular to parallel direction is found to be similar to 2.5 at the Curie temperature. The nonsuperimposition of the normalized Z '' and M '' versus frequency plot revealed that the conduction is localized and deviate from ideal Debye-like behavior. The conduction mechanism has been explained on the basis of jump relaxation model.
- 出版日期2010
