Thermal Diffusivity Measurement of La Doped SrSn0 3(Sr1_xLaxSn03 ) Ceramics by Photoflash Method
Liew, Josephine Ying Chyi and Mat Yunus, W. Mahmood and Ahmad Taha, Iftetan and Shaari, Abdul Halim (2005) Thermal Diffusivity Measurement of La Doped SrSn0 3(Sr1_xLaxSn03 ) Ceramics by Photoflash Method. Pertanika Journal of Science & Technology, 13 (2). pp. 163-172. ISSN 0128-7680
Thermal diffusivity, a of a medium is the thermophysicaJ property which determines the speed of heat propagation by conduction during changes of temperature with time. The measurement of thermal diffusivity can be carried out at room temperature by photoflash method, which employs a high intensity camera flash as the excitation source. In this paper, Sr1 _ xLaxSn0 3 ceramics doped with different compositions of La (x = 0.1, 0.4, 0.6, 0.8, 1.0) was investigated for their thermal diffusivity. The thermal diffusivity values varied from 0.44 x 10-2 - 1.15 X 10-2 cm2/s corresponding to x = 0.1 to x = 1.0. The morphology and structure of Sr1 _xLaxSn03 ceramics were analysed from SEM and XRD measurements to support the thermal diffusivity behaviour.
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