Effect of Sintering Temperatures and Ba/Ti Ratio on Dielectric Properties of BaTiO₃ Ceramic

Abstract:

As a research object, the samples with various Ba/Ti ratios (Ba/Ti=0.95~1.05) were synthesized by solid phase reaction method. Effect of sintering temperatures and Ba/Ti ratio on dielectric properties and crystal structure of BaTiO₃ ceramic were investigated. Crystal structure and crystal phase composition were investigated by scanning electron microscopy and X-ray diffraction. The dielectric properties were studied by Agilent 4294A at 1 kHz. The results show that the BaTiO₃ ceramic has high permittivity and dielectric loss at 1340°C. The permittivity of BaTiO₃ ceramic with Ba/Ti=0.95 change small as the sintering temperatures vary at 1320°C. With the increasing of Ba/Ti ratio, the Curie temperature first increases and then decreases as the sample sintering at 1320°C. When Ba/Ti=1, the Curie temperature increase with the sintering temperature increasing.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 506-511
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.506
• Online since: August 2013
• Authors: Yuan Yuan Li, Gui Xia Dong, Bi Yan Zhu, Qiu Xiang Liu, Di Wu
• Keywords: Ba/Ti Ratio, Barium Titanate (BT), Dielectric Property, Sintering Temperature

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