(1-x)LiCuNb_(3)O_(9)-Bi(Mg_(0.5)Zr_(0.5))O_(3) ceramics((1-x)LCN-xBMZ)with 0≤x≤0.08 were synthesized by a solid-state reaction method.The phase structure of(1-x)LCN-xBMZ ceramics was characterized by X ray diffracti...(1-x)LiCuNb_(3)O_(9)-Bi(Mg_(0.5)Zr_(0.5))O_(3) ceramics((1-x)LCN-xBMZ)with 0≤x≤0.08 were synthesized by a solid-state reaction method.The phase structure of(1-x)LCN-xBMZ ceramics was characterized by X ray diffraction(XRD),which revealed that the ceranics were distorted cubic perovskite structures.Apparent giant permitivity of 1.98× 10^(4)-1.05× 10^(5) at 100kHz over the measured temperature range(259℃-250℃)was observed in the sintered(1-x)LCN-xBMZ(0≤x≤0.08)ceramics.Especially for the sample of x=0.04,the temperature stability of permitivity was markedly increased(△ε/ε100℃≤±15%),and high relative permitivity(>8.3 × 10^(4))were obtained over a wide temperature range from 100℃ to 250℃at 100 kHz,which indicates that this ceramic is a promising dielectrice material for elevated temperature dielectrics.The giant dielectric property of(1-x)LCN-xBMZ ceramics are profoundly concerned with the Maxwell-Wagner effect.展开更多
基金supported by Natural Science Foundation of China(Nos.11664008,11464009 and 61761015)Natural Science Foundation of Guangxi(Nos.2017GXNSFDA198027,2017GXNSFFA198011 and 2015GXNSFDA139033)Project of Guangxi Scientific Research and Technical Development(No.1348020-11).
文摘(1-x)LiCuNb_(3)O_(9)-Bi(Mg_(0.5)Zr_(0.5))O_(3) ceramics((1-x)LCN-xBMZ)with 0≤x≤0.08 were synthesized by a solid-state reaction method.The phase structure of(1-x)LCN-xBMZ ceramics was characterized by X ray diffraction(XRD),which revealed that the ceranics were distorted cubic perovskite structures.Apparent giant permitivity of 1.98× 10^(4)-1.05× 10^(5) at 100kHz over the measured temperature range(259℃-250℃)was observed in the sintered(1-x)LCN-xBMZ(0≤x≤0.08)ceramics.Especially for the sample of x=0.04,the temperature stability of permitivity was markedly increased(△ε/ε100℃≤±15%),and high relative permitivity(>8.3 × 10^(4))were obtained over a wide temperature range from 100℃ to 250℃at 100 kHz,which indicates that this ceramic is a promising dielectrice material for elevated temperature dielectrics.The giant dielectric property of(1-x)LCN-xBMZ ceramics are profoundly concerned with the Maxwell-Wagner effect.
