J. Phys. IV France
Volume 125, June 2005
Page(s) 309 - 311

J. Phys. IV France 125 (2005) 309-311

DOI: 10.1051/jp4:2005125074

Thermal properties of Sr0,3 Ba0,7Ti1-yZryO3 ferroelectric ceramics: Dependence on sample's porosity

S. García1, 2, E. Marín1, O. Delgado-Vasallo1, J. Portelles1, 2, G. Peña Rodríguez3, A. Calderón3, E. Martínez2 and J.M. Siqueiros2

1  Facultad de Física, Universidad de la Habana, San Lázaro y L, 10400 La Habana, Cuba
2  Centro de Ciencias de la Materia Condensada. UNAM, AP 2681, Ensenada, BC, Mexico
3  CICATA-IPN, Unidad Legaria, Legaria 694, Col. Irrigación, 11500 Mexico, DF, Mexico

The thermal properties of Sr0,3 Ba0,7Ti1-yZryO3 (BST30Zr) ferroelectric ceramics with different concentrations of Zr are studied by a Photoacoustic (PA) technique and the temperature relaxation method. The results of the measurements shows that the thermal conductivity of the samples increases linearly with the content of Zr, a behavior explained using the Maxwell-model for the dependence of this magnitude from sample's porosity.

© EDP Sciences 2005