Preparation of Fine Ceramic Ba0.65Sr0.35TiO3 Materials and Their Dielectric Properties

Abstract

Abstract: Ba_0.65Sr_0.35TiO₃ materials were prepared by sol-gel processing and microwave sintering, their dielectric properties were studied and compared with
the same compositional material prepared by conventional processing. The results show that the synthetic temperature of the BST powder can be reduced from 1100℃　to 900℃, and the BST ceramic with fine grain (～1μm) can be obtained
by microwave sintering at 1310℃ for 25 minutes. With the decreasing of grain size, the relative dielectric constant of the samples changes slightly and
the dielectric loss reduces greatly. The decrease of dielectric loss is attributed to the presence of an internal stress in the fine-grained BST ceramics.

Key words: Ba_0.65Sr_0.35TiO₃ ceramic, microwave sintering, sol-gel, dielectric properties

CLC Number:

TN304

YANG Wen,CHANG Ai-Min,ZHUANG Jian-Wen,YANG Bang-Chao. Preparation of Fine Ceramic Ba_0.65Sr_0.35TiO₃ Materials and Their Dielectric Properties[J]. Journal of Inorganic Materials.

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Preparation of Fine Ceramic Ba_0.65Sr_0.35TiO₃ Materials and Their Dielectric Properties

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