采用水热法制备了Ba0.7La0.2Ca0.1TiO3陶瓷材料,研究了MnCO3/MnO共掺杂对陶瓷材料介电性能的影响及相关的影响规律.随着nMnCO3/nMnO2的增加,材料的介电常数开始增大随后减小,而介电损耗先减小再增大后开始波动,击穿场强先增大后减小.当nMnco3/nMno2为3∶1时介电常数最大,得到了介电常数(εr)为4661,介质损耗(tanδ)为0.0165,击穿场强(Eb)为12.58 kV/mm,绝缘电阻(R)为3.7×1013 Ω的高介电低损耗陶瓷粉体材料.最后探讨了MnCO3/MnO共掺杂改性的有关机理.
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