Citation
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
Abstract
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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