Microstructure and Dielectric Properties of (Ba, Ta) Co-Doped Sr2Nb2O7 Ceramics

Gang Chen; Chun Wei Gong; Chun Lin Fu; Xiao Dong Peng; Wei Cai; Rong Li Gao; Xiao Ling Deng

doi:10.4028/www.scientific.net/MSF.815.125

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HomeMaterials Science ForumMaterials Science Forum Vol. 815Microstructure and Dielectric Properties of (Ba,...

Microstructure and Dielectric Properties of (Ba, Ta) Co-Doped Sr₂Nb₂O₇ Ceramics

Abstract:

(Sr_1-xBa_x)₂(Nb_0.9Ta_0.1)₂O₇ (SBNT) ceramics were prepared by solid state reaction. The crystal structure of SBNT ceramics, surface morphology and dielectric properties were studied using XRD, SEM and LCR instrument analyzer, respectively. The results show that the grain size decreases with increasing Ba concentration, and all samples show single phase, no second phase can been observed. Addition of Ba ion can improve the dielectric properties of SBN ceramics. The dielectric constant increases first, then decreases; the maximum value (ε_r=97) can be obtained at x=0.1, the dielectric constant changes slightly with increasing wide frequency.

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Materials Science Forum (Volume 815)

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125-128

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.815.125

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March 2015

Authors:

Gang Chen*, Chun Wei Gong, Chun Lin Fu, Xiao Dong Peng, Wei Cai, Rong Li Gao, Xiao Ling Deng

Keywords:

(Ba, Ta) Co-Doped, Dielectric Properties, Microstructure, Sr₂Nb₂O₇ Ceramics

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