Nonlinear Electrical Behaviour of Composite SnO2 --Zn2 SnO4 System
ZANG Guo-Zhong, WANG Jin-Feng, CHEN Hong-Cun, SU Wen-Bin, WANG Chun-Ming, QI Peng
School of Physics and Microelectronics, Shandong University, Jinan 250100
Nonlinear Electrical Behaviour of Composite SnO2 --Zn2 SnO4 System
ZANG Guo-Zhong;WANG Jin-Feng;CHEN Hong-Cun;SU Wen-Bin;WANG Chun-Ming;QI Peng
School of Physics and Microelectronics, Shandong University, Jinan 250100
关键词 ：
84.32.Ff ,
72.20.Ht ,
81.20.Ev
Abstract ： We have found a new composite SnO2 --Zn2 SnO4 varistor material and the effect of different content ratios of SnO2 to Zn2 SnO4 on this system is investigated. The lowest breakdown voltage (EB =6.4V/mm) and the highest relative dielectric constant (εr =1.54× 104 ) with higher nonlinear coefficient (α=4.5) is obtained when the ratio of SnO2 to ZnO equals 100/35. The disappear of the Zn2 SnO4 peak in x-ray diffraction (XRD) spectra of the SnO2 +2.5mol%ZnO sample and the electric insulation behaviour of the samples with 2.5mol% ZnO and 200mol% ZnO indicate that 2.5mol% ZnO can be dissolved into SnO2 lattices and some reaction contributing to nonlinear electrical behaviour should occur between SnO2 and Zn2 SnO4 . The role of oxygen on the grain boundary is confirmed by the degradation of nonlinear electrical properties and the increase of relative dielectric constant of the samples annealed in nitrogen-rich atmosphere.
Key words ：
84.32.Ff
72.20.Ht
81.20.Ev
出版日期: 2005-03-01
:
84.32.Ff
(Conductors, resistors (including thermistors, varistors, and photoresistors))
72.20.Ht
(High-field and nonlinear effects)
81.20.Ev
(Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)
引用本文:
ZANG Guo-Zhong;WANG Jin-Feng;CHEN Hong-Cun;SU Wen-Bin;WANG Chun-Ming;QI Peng. Nonlinear Electrical Behaviour of Composite SnO2 --Zn2 SnO4 System[J]. 中国物理快报, 2005, 22(3): 750-753.
2 --Zn2 SnO4 System. Chin. Phys. Lett., 2005, 22(3): 750-753.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I3/750
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2005, Vol. 22 
