Thermal diffusivity measurement of Zn, Ba, V, Y and Sn doped Bi-Pb-Sr-Ca-Cu-O ceramics superconductors by photoacoustic technique

Citation

M. Yunus, W. M. and Fanny, C. Y. J. and Phing, T. E. and Mohamed, S. B. and Halim, S. A. and Moksin, M. M. (2002) Thermal diffusivity measurement of Zn, Ba, V, Y and Sn doped Bi-Pb-Sr-Ca-Cu-O ceramics superconductors by photoacoustic technique. JOURNAL OF MATERIALS SCIENCE (3 7). pp. 1055-1060.

Abstract

The simple open photoacoustic cell technique is demonstrated for measuring the thermal diffusivity of the Zn, Ba, V, Y and Sn doped Bi-Pb-Sr-Ca-Cu-O superconducting ceramic samples. It is based upon the measurement of the photoacoustic signal as a function of the modulation frequency in the region where the sample thickness, ls, equal to the thermal diffusion length of the sample, μs. The obtained thermal diffusivity values of Ba, V, Y and Sn doped in Bi-Pb-Sr-Ca-Cu-O system increase with the increasing dopant concentration at Ca side. However, the thermal diffusivity values of Zn doped sample decrease with the increasing of dopant concentration in the system. The measured thermal diffusivity value was found to be very dependent on the dopant atom and dopant concentration.

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Additional Metadata

Item Type:	Article
Divisions:	Faculty of Science and Environmental Studies
DOI Number:	https://doi.org/10.1023/A:1014372519692
Publisher:	Kluwer Academic Publishers
Keywords:	Thermal diffusivity; Open photoacoustic cell technique; Diffusivity value; Dopant atom; Dopant concentration.
Depositing User:	Ms. Azian Edawati Zakaria
Date Deposited:	20 Mar 2025 03:20
Last Modified:	20 Mar 2025 03:20
URI:	http://psasir.upm.edu.my/id/eprint/116184
Statistic Details:	View Download Statistic

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