Electrical barriers formation at the grain boundaries of Co-doped SnO2 varistor ceramics

被引：41
|
作者：
Metz, R. [1 ,2 ]
Koumeir, D. [1 ]
Morel, J. [1 ]
Pansiot, J. [1 ]
Houabes, M. [1 ]
Hassanzadeh, A. [3 ]
机构：
[1] Univ Lyon 1, CNRS Isochem, Lab Hydrazines & Precedes Lyon 1, Grp SNPE,UMR 5179, F-69622 Villeurbanne, France
[2] Univ Montpellier 2, Inst Charles Gerhardt, UMR Composante Physicochim Mat Organises Fonct 52, F-34095 Montpellier 5, France
[3] Areva T&D, DRC, F-34965 Montpellier 2, France
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2008年 / 28卷 / 04期
关键词：
varistors; SnO2; electrical properties; grain boundaries;
D O I：
10.1016/j.jeurceramsoc.2007.05.024
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：
The nonlinear electrical properties of CoO-doped SnO2 ceramics were characterized. A second phase is observed at the surface of the microstructure of the specimens. Energy-dispersive X-ray analysis reveals that the second phase is composed of tin, cobalt and oxygen with an approximate atomic ratio estimated for Co and Sn: 2: 1. The phase was identified by X-ray diffraction and unambiguously establish the identity of the phase: Co2SnO4. Electrical characterization of the binary CoO-SnO2 was carried out on a very large range of current from 10(-9) up to 100 A cm(-2) showing that the doping of CoO increases drastically the resistivity of the ceramic from 10(4) to 10(10) Omega cm. This value appears to be a threshold for which the nonlinear effect appears. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：829 / 835
页数：7
相关论文
共 50 条
  • [21] First Principle Study of Electrical Properties of Ce and S Co-Doped SnO2
    Zhang Z.
    Wang J.
    Zhu Y.
    Xiyou Jinshu/Chinese Journal of Rare Metals, 2023, 47 (02): : 265 - 272
  • [22] A new composition of ceramic varistor: SnO2 doped with (Co, Nb, Al)
    Santhosh, PN
    Date, SK
    BULLETIN OF MATERIALS SCIENCE, 1996, 19 (04) : 713 - 715
  • [23] Magnetic properties of (Co, Al) co-doped SnO2 nanoparticles
    Reddy, P. Venkateswara
    Reddy, S. Venkatramana
    Reddy, N. Koteeswara
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2017, 28 (18) : 13320 - 13327
  • [24] Magnetic and optical properties of (Mn, Co) co-doped SnO2
    Lin, Long
    Chen, Ruixin
    He, Chaozheng
    Tao, Hualong
    Huang, Jingtao
    Zhu, Linghao
    Yan, Longbin
    Zhang, Jisheng
    VACUUM, 2020, 182 (182)
  • [25] Synthesis of Co, Fe co-doped SnO2: characterization and applications
    Chedala, K.
    Benhaoua, A.
    Hima, A.
    Gheriani, R.
    Segueni, L.
    Ayachi, L.
    DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 2022, 17 (04) : 1163 - 1172
  • [26] Magnetic properties of (Co, Al) co-doped SnO2 nanoparticles
    P. Venkateswara Reddy
    S. Venkatramana Reddy
    N. Koteeswara Reddy
    Journal of Materials Science: Materials in Electronics, 2017, 28 : 13320 - 13327
  • [27] Magnetic and Mossbauer studies of Fe and Co co-doped SnO2
    Kono, Shin
    Nomura, Kiyoshi
    Yamada, Yasuhiro
    Okabayashi, Jun
    HYPERFINE INTERACTIONS, 2012, 205 (1-3): : 105 - 109
  • [28] SYNTHESIS AND CHARACTERIZATION OF UNDOPED AND Co-DOPED SnO2 NANOPARTICLES
    Mariammal, R. N.
    Rajamanickam, N.
    Ramachandran, K.
    JOURNAL OF NANO- AND ELECTRONIC PHYSICS, 2011, 3 (01) : 92 - 100
  • [29] Investigation of electron traps in SnO2 based varistor ceramics
    Fan, Jiwei
    Freer, Robert
    HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2, 2008, 368-372 : 517 - 520
  • [30] Structural, electrical and magnetic properties of (Fe, Co) co-doped SnO2 diluted magnetic semiconductor nanostructures
    Mehraj, Sumaira
    Ansari, M. Shahnawaze
    Alimuddin
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2015, 65 : 84 - 92
12345