The exploration of colossal dielectric permittivity (CP) materials with low dielectric loss in a wide range of frequencies/temperatures continues to attract considerable interest. In this paper, we report CP in (Al + Nb) co-doped rutile SnO2 ceramics with a low dielectric loss at room temperature. Al0.02Nb0.05Sn0.93O2 and Al0.03Nb0.05Sn0.92O2 ceramics exhibit high relative dielectric permittivities (above 103) and low dielectric losses (0.015 < tan δ < 0.1) in a wide range of frequencies and at temperatures from 140 to 400 K. Al doping can effectively modulate the dielectric behavior by increasing the grain and grain boundary resistances. The large differences in the resistance and conductive activation energy of the grains and grain boundaries suggest that the CP in co-doped SnO2 ceramics can be attributed to the internal barrier layer capacitor effect.
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3 October 2016
Research Article|
October 04 2016
Colossal dielectric permittivity in (Al + Nb) co-doped rutile SnO2 ceramics with low loss at room temperature
Yongli Song;
Yongli Song
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
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Xianjie Wang;
Xianjie Wang
a)
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
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Xingquan Zhang;
Xingquan Zhang
2Analytical and Testing Center,
Southwest University of Science and Technology
, Mianyang 621010, China
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Xudong Qi;
Xudong Qi
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
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Zhiguo Liu;
Zhiguo Liu
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
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Lingli Zhang;
Lingli Zhang
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
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Yu Zhang;
Yu Zhang
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
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Yang Wang;
Yang Wang
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
3Academy of Fundamental and Interdisciplinary Sciences,
Harbin Institute of Technology
, Harbin 150001, China
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Yu Sui;
Yu Sui
a)
1Department of Physics,
Harbin Institute of Technology
, Harbin 150001, China
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a)
Authors to whom correspondence should be addressed. Electronic addresses: wangxianjie@hit.edu.cn; suiyu@hit.edu.cn; and songbo@hit.edu.cn
Appl. Phys. Lett. 109, 142903 (2016)
Article history
Received:
July 31 2016
Accepted:
September 20 2016
Citation
Yongli Song, Xianjie Wang, Xingquan Zhang, Xudong Qi, Zhiguo Liu, Lingli Zhang, Yu Zhang, Yang Wang, Yu Sui, Bo Song; Colossal dielectric permittivity in (Al + Nb) co-doped rutile SnO2 ceramics with low loss at room temperature. Appl. Phys. Lett. 3 October 2016; 109 (14): 142903. https://doi.org/10.1063/1.4964121
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