The lowered dielectric loss tangent and grain boundary effects in fluorine-doped calcium copper titanate ceramics
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作者:
Xin Huang
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机构:University of Electronic Science and Technology of China,State Key Laboratory of Electronic Thin Films and Integrated Devices
Xin Huang
Huaiwu Zhang
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h-index: 0
机构:University of Electronic Science and Technology of China,State Key Laboratory of Electronic Thin Films and Integrated Devices
Huaiwu Zhang
Yuanming Lai
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h-index: 0
机构:University of Electronic Science and Technology of China,State Key Laboratory of Electronic Thin Films and Integrated Devices
Yuanming Lai
Jie Li
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h-index: 0
机构:University of Electronic Science and Technology of China,State Key Laboratory of Electronic Thin Films and Integrated Devices
Jie Li
机构:
[1] University of Electronic Science and Technology of China,State Key Laboratory of Electronic Thin Films and Integrated Devices
来源:
Applied Physics A
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2017年
/
123卷
关键词:
CuF2;
Dielectric Loss Tangent;
Boundary Resistance;
Electric Modulus;
CCTO Ceramic;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
The effects of F− concentration on the dielectric properties and electric modulus of CaCu3Ti4O12−xFx ceramics (0 ≦ x ≦ 0.8) were investigated in detail. Proper amount of F− substitution in CaCu3Ti4O12−xFx ceramics reduced the dielectric loss tangent. When x = 0.8, the dielectric loss tangent of CaCu3Ti4O12−xFx ceramic was about 0.05 (at 5 kHz), which was the lowest value and exhibited the highest grain boundary resistance (1.18 MΩ); meanwhile, the samples retained a relatively high dielectric constant above 7000 over a wide frequency range of 100 Hz to 1 MHz. The grain size was reduced as the F− doping concentration increased, which enhanced grain boundary resistance, and the decreased dielectric loss tangent was attributed to the increased grain boundary resistance. With the increase of F− concentration, the dielectric relaxation behaviors correlated with the grain boundary effects were significantly enhanced. The thermal-activated Schottky-type barrier was formed in the grain boundaries, and CaCu3Ti4O12−xFx ceramics had a nonlinear-Ohmic property.
机构:
Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
Liu, Wenfeng
Kong, Fanyi
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机构:
Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
Kong, Fanyi
Zhao, Yi
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机构:
Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
Zhao, Yi
Jin, Yihang
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机构:
Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
Jin, Yihang
Gao, Jinghan
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机构:
Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
Gao, Jinghan
Zhang, Lei
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机构:
Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
Zhang, Lei
Li, Shengtao
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机构:
Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
机构:
Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R ChinaChongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
Zhao, Xuetong
Li, Yupeng
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机构:
Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R ChinaChongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
Li, Yupeng
Ren, Lulu
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机构:
Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R ChinaChongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
Ren, Lulu
Xu, Chao
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h-index: 0
机构:
Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
Jiaxing Power Supply Co, State Grid Zhejiang Elect Power Co, Jiaxing 314033, Peoples R ChinaChongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
Xu, Chao
Sun, Jianjie
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机构:
Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R ChinaChongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
Sun, Jianjie
Yang, Lijun
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机构:
Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R ChinaChongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
Yang, Lijun
Liao, Ruijin
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机构:
Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R ChinaChongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China