Densification and Dielectric Property of B2O3-doped Ba1-xSrxTiO3 Graded Ceramics

Abstract

Abstract: The effect of B₂O₃ dopant amount and sintering temperature on the densification behavior and
microstructure of Ba_1-xSr_xTiO₃(x=0～0.4) was investigated, and different contents of B₂O₃ were selected for
the different composition of Ba_1-xSr_xTiO₃. Then with a series of doped Ba_1-xSr_xTiO₃ powders, graded pellet was fabricated and sintered,
and dielectric property was measured. The results show that, the sintering temperature of B₂O₃-doped Ba_1-xSr_xTiO₃ is effectively
lowered at least 100℃ compared with that of undoped Ba_1-xSr_xTiO₃, and at 1300℃ the ceramic is nearly full densified. After sintering, the Curie temperature zone of graded
ceramics is broadened remarkably, and the permittivity-temperature coefficient is greatly decreased, which means the accuracy and stability
of components made of such material can be improved.

Key words: Ba_1-xSr_xTiO₃, doping, graded ceramics, dielectric property

CLC Number:

TQ174
TM22

CHENG Hua-Rong,ZHU Jing-Chuan,JEON Jae-Ho,YIN Zhong-Da. Densification and Dielectric Property of B₂O₃-doped Ba_1-xSr_xTiO₃ Graded Ceramics[J]. Journal of Inorganic Materials.

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Densification and Dielectric Property of B₂O₃-doped Ba_1-xSr_xTiO₃ Graded Ceramics

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