Conventional and microwave sintering of BST for tunable devices

L. Radhapiyari Devi; O. P. Thakur; Chandra Prakash

doi:10.1117/12.514527

14 October 2003 Conventional and microwave sintering of BST for tunable devices

L. Radhapiyari Devi, O. P. Thakur, Chandra Prakash

Proceedings Volume 5062, Smart Materials, Structures, and Systems; (2003) https://doi.org/10.1117/12.514527
Event: Smart Materials, Structures, and Systems, 2002, Bangalore, India

Abstract

The structural and dielectric properties of Ba_1-xSr_xFe_0.01Ti_0.99O₃ 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.

Citation Download Citation

L. Radhapiyari Devi, O. P. Thakur, and Chandra Prakash "Conventional and microwave sintering of BST for tunable devices", Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); https://doi.org/10.1117/12.514527

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