Dependence of the nonlinear electrical behavior of SnO2-based varistors on Cr2O3 addition

被引：21
|
作者：
Filho, F. M.
Simoes, A. Z.
Ries, A.
Perazolli, L.
Longo, E.
Varela, J. A.
机构：
[1] UNESP, Dept Phys Chem, Inst Chem, BR-14801970 Araraquara, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP, Brazil
来源：
CERAMICS INTERNATIONAL | 2007年 / 33卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
varistors; tin dioxide; impedance spectroscopy;
D O I：
10.1016/j.ceramint.2005.07.025
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Tin dioxide varistors doped with Coo, ZnO, Ta2O5 and Cr2O3 were prepared by the mixed oxide method. Temperature dependent impedance spectroscopy revealed two different activation energies, one at low frequencies and the other at high frequencies. These activation energies were associated with the adsorption and reaction of O-2 species at the grain boundary interface. We show that Cr2O3 improves the varistor properties, generating sites for the adsorption of O' and O" at the grain boundary region. The O' and O" defects are truly responsible for the barrier formation at the grain boundary interface. (c) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：187 / 192
页数：6
相关论文
共 50 条
  • [41] Electrical properties of the SnO2-based varistor
    Pianaro, SA
    Bueno, PR
    Olivi, P
    Longo, E
    Varela, JA
    [J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 1998, 9 (02) : 159 - 165
  • [42] Varistor behavior of the system SnO2ċCoOċTa2O5ċCr2O3
    G. F. Menegotto
    S. A. Pianaro
    A. J. Zara
    S. R. M. Antunes
    A. C. Antunes
    [J]. Journal of Materials Science: Materials in Electronics, 2002, 13 : 253 - 256
  • [43] Varistor behavior of the system SnO2•CoO•Ta2O5•Cr2O3
    Menegotto, GF
    Pianaro, SA
    Zara, AJ
    Antunes, SRM
    Antunes, AC
    [J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2002, 13 (05) : 253 - 256
  • [44] Microstructure development and nonlinear electrical characteristics of the SnO2.CuO.Ta2O5 based varistors
    Wang, CM
    Wang, JF
    Su, WB
    Chen, HC
    Zang, GZ
    Qi, P
    [J]. JOURNAL OF MATERIALS SCIENCE, 2005, 40 (24) : 6459 - 6462
  • [45] Nonlinear spectroscopy of antiferromagnetic Cr2O3
    Fiebig, M
    Frohlich, D
    Pisarev, RV
    [J]. JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) : 4875 - 4877
  • [46] EFFECTS OF SIO2 AND CR2O3 ON THE FORMATION PROCESS OF ZNO VARISTORS
    KANAI, H
    IMAI, M
    [J]. JOURNAL OF MATERIALS SCIENCE, 1988, 23 (12) : 4379 - 4382
  • [47] Effect of Sc2O3 on the electrical properties of (Co, Ta, Cr)-doped SnO2 varistors
    Zang, GZ
    Wang, JF
    Chen, HC
    Su, WB
    Wang, CM
    Qi, P
    [J]. PHYSICA B-CONDENSED MATTER, 2005, 367 (1-4) : 29 - 34
  • [48] The Effects of Bi2O3 Doping on the Electrical Characteristics of SnO2 based Varistors
    Fan, Jiwei
    Zhang, Zhenguo
    Li, Xiaopeng
    Liu, Xiangyang
    Li, Tian
    [J]. APPLICATIONS OF ENGINEERING MATERIALS, PTS 1-4, 2011, 287-290 : 486 - 489
  • [49] CREEP OF CR2O3 AND YTTRIUM DOPED CR2O3
    DOMINGUEZRODRIGUEZ, A
    DEARELLANOLOPEZ, AR
    GORETTA, KC
    KING, WE
    PARK, JH
    ROUTBORT, JL
    [J]. MATERIALS SCIENCE AND TECHNOLOGY, 1989, 5 (05) : 499 - 501
  • [50] DEVELOPMENT OF SNO2 BASED VARISTORS - ELECTRICAL BEHAVIOR AND PULSE DEGRADATION COMPARATIVELY TO ZNO VARISTORS
    Bassi, W.
    Ramirez, M. A.
    Bueno, P. R.
    Longo, E.
    Varela, J. A.
    [J]. 2010 30TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP), 2010,
12345