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Proceedings Paper

Conventional and microwave sintering of BST for tunable devices
Author(s): L. Radhapiyari Devi; O. P. Thakur; Chandra Prakash
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Paper Abstract

The structural and dielectric properties of Ba1-xSrxFe0.01Ti0.99O3 with x = 0.30 were investigated and compared following different sintering techniques (conventional and microwave) in order to optimize the materials for tunable microwave applications. The microwave sintering has been advantageous over the conventional sintering because it has very fast heating rate and thus saving processing time. In the present study, it has been found that the tunability of the conventionally sintered samples is higher than the microwave sintered ones. It can be explained due to the fact that the grain size is larger for the conventionally sintered specimen. The internal stresses among the grain affect the macroscopic value of the dielectric constant above the Curie point. The tunability is larger for the larger grain size samples as the effect of internal stress is less in this case.

Paper Details

Date Published: 14 October 2003
PDF: 5 pages
Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); doi: 10.1117/12.514527
Show Author Affiliations
L. Radhapiyari Devi, Solid State Physics Lab. (India)
O. P. Thakur, Solid State Physics Lab. (India)
Chandra Prakash, Solid State Physics Lab. (India)

Published in SPIE Proceedings Vol. 5062:
Smart Materials, Structures, and Systems
S. Mohan; B. Dattaguru; S. Gopalakrishnan, Editor(s)

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