AVS 45th International Symposium
    Thin Films Division Monday Sessions
       Session TF-MoP

Paper TF-MoP11
Texture and Grain Size Modification through the Different Sintering Conditions for Ceramics of the Sr@sub 0.5@Ba@sub 0.5@TiO@sub 3@ Type

Monday, November 2, 1998, 5:30 pm, Room Hall A

Session: Thin Films Poster Session
Presenter: J.M. Siqueiros, UNAM, Mexico
Authors: J.M. Siqueiros, UNAM, Mexico
J. Portelles, Universidad de la Habana, Cuba
S. Garcia, Universidad de la Habana, Cuba
S. Aguilera, Universidad de Catolica de Norte, Chile
M. Xiao, UNAM, Mexico
A. Fundora, Universidad de la Habana, Cuba
Correspondent: Click to Email
The variation of the sintering conditions: temperature and sintering time, strongly modify the texture and grain size of the SBT ferroelectric compound (Sr@sub 0.5@Ba@sub 0.5@TiO@sub 3@). In this report, the sintering time is varied from 1 to 5 hours. The grain size increases as the sintering temperature is varied from 1200 to 1450 @super o@C. SEM studies allow us to determine the corresponding microstructure for each temperature and sintering time. A linear dependence of logarithm of the grain size with the sintering temperature is found. A change in the dielectric permittivity and the polarization with the sintering conditions is also reported. The analysis of the results is supported with XRD, thermoelectric and dielectric hysteresis measurements