Electrical and dielectric properties of Na-doped ZnO varistors

Jiajun Lin; Shengtao Li; Jinqiang He; Wenfeng Liu

doi:10.1109/ICD.2016.7547819

Electrical and dielectric properties of Na-doped ZnO varistors

Jiajun Lin
, Shengtao Li
, Jinqiang He
, Wenfeng Liu

School of Electrical Engineering

Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

ZnO-based varistors have been extensively used for the protection of devices and equipment against voltage surges because of their exceptional nonlinearity in current-voltage characteristics and the ability to absorb large amounts of energy. Since the composition and fabrication process are complicated, impurities are inevitable in the varistors. Sodium impurities are frequently present in the raw oxides that constitute the complex formulation of ZnO-Bi₂O₃-based varistors. The main goal of present paper is investigating the influences of sodium impurities (<0.1 wt%) on the electrical and dielectric properties of ZnO-based varistors. The results show that with the increase of Na amount, the varistor breakdown field remains stable at first and then begins to decrease from ∼210V/mm to 200V/mm; the residual voltage ratio reaches to the lowest value when the Na amount is at 0.0005∼0.0020 wt%. The relaxation loss peaks of samples at low temperature decrease at first and then increase which are closely related to variation of residual voltage ratio. It turned out that sodium impurity will influence the intrinsic defects in ZnO-based varistors, and the performances of samples are improved with trace of sodium impurity.

Original language	English
Title of host publication	Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1143-1146
Number of pages	4
ISBN (Electronic)	9781509028023
DOIs	https://doi.org/10.1109/ICD.2016.7547819
State	Published - 18 Aug 2016
Event	1st IEEE International Conference on Dielectrics, ICD 2016 - Montpellier, France Duration: 3 Jul 2016 → 7 Jul 2016

Publication series

Name	Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
Volume	2

Conference

Conference	1st IEEE International Conference on Dielectrics, ICD 2016
Country/Territory	France
City	Montpellier
Period	3/07/16 → 7/07/16

Keywords

Dielectric properties
ZnO varistor
electrical properties
sodium impurity

Access to Document

10.1109/ICD.2016.7547819

Cite this

Lin, J., Li, S., He, J., & Liu, W. (2016). Electrical and dielectric properties of Na-doped ZnO varistors. In Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016 (pp. 1143-1146). Article 7547819 (Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016; Vol. 2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICD.2016.7547819

@inproceedings{3ec65f967aba4236935a4f7ccaedbea7,

title = "Electrical and dielectric properties of Na-doped ZnO varistors",

abstract = "ZnO-based varistors have been extensively used for the protection of devices and equipment against voltage surges because of their exceptional nonlinearity in current-voltage characteristics and the ability to absorb large amounts of energy. Since the composition and fabrication process are complicated, impurities are inevitable in the varistors. Sodium impurities are frequently present in the raw oxides that constitute the complex formulation of ZnO-Bi2O3-based varistors. The main goal of present paper is investigating the influences of sodium impurities (<0.1 wt\%) on the electrical and dielectric properties of ZnO-based varistors. The results show that with the increase of Na amount, the varistor breakdown field remains stable at first and then begins to decrease from ∼210V/mm to 200V/mm; the residual voltage ratio reaches to the lowest value when the Na amount is at 0.0005∼0.0020 wt\%. The relaxation loss peaks of samples at low temperature decrease at first and then increase which are closely related to variation of residual voltage ratio. It turned out that sodium impurity will influence the intrinsic defects in ZnO-based varistors, and the performances of samples are improved with trace of sodium impurity.",

keywords = "Dielectric properties, ZnO varistor, electrical properties, sodium impurity",

author = "Jiajun Lin and Shengtao Li and Jinqiang He and Wenfeng Liu",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 1st IEEE International Conference on Dielectrics, ICD 2016 ; Conference date: 03-07-2016 Through 07-07-2016",

year = "2016",

month = aug,

day = "18",

doi = "10.1109/ICD.2016.7547819",

language = "英语",

series = "Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016",

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}

Lin, J, Li, S, He, J & Liu, W 2016, Electrical and dielectric properties of Na-doped ZnO varistors. in Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016., 7547819, Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016, vol. 2, Institute of Electrical and Electronics Engineers Inc., pp. 1143-1146, 1st IEEE International Conference on Dielectrics, ICD 2016, Montpellier, France, 3/07/16. https://doi.org/10.1109/ICD.2016.7547819

Electrical and dielectric properties of Na-doped ZnO varistors. / Lin, Jiajun; Li, Shengtao; He, Jinqiang et al.
Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 1143-1146 7547819 (Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Electrical and dielectric properties of Na-doped ZnO varistors

AU - Lin, Jiajun

AU - Li, Shengtao

AU - He, Jinqiang

AU - Liu, Wenfeng

PY - 2016/8/18

Y1 - 2016/8/18

N2 - ZnO-based varistors have been extensively used for the protection of devices and equipment against voltage surges because of their exceptional nonlinearity in current-voltage characteristics and the ability to absorb large amounts of energy. Since the composition and fabrication process are complicated, impurities are inevitable in the varistors. Sodium impurities are frequently present in the raw oxides that constitute the complex formulation of ZnO-Bi2O3-based varistors. The main goal of present paper is investigating the influences of sodium impurities (<0.1 wt%) on the electrical and dielectric properties of ZnO-based varistors. The results show that with the increase of Na amount, the varistor breakdown field remains stable at first and then begins to decrease from ∼210V/mm to 200V/mm; the residual voltage ratio reaches to the lowest value when the Na amount is at 0.0005∼0.0020 wt%. The relaxation loss peaks of samples at low temperature decrease at first and then increase which are closely related to variation of residual voltage ratio. It turned out that sodium impurity will influence the intrinsic defects in ZnO-based varistors, and the performances of samples are improved with trace of sodium impurity.

AB - ZnO-based varistors have been extensively used for the protection of devices and equipment against voltage surges because of their exceptional nonlinearity in current-voltage characteristics and the ability to absorb large amounts of energy. Since the composition and fabrication process are complicated, impurities are inevitable in the varistors. Sodium impurities are frequently present in the raw oxides that constitute the complex formulation of ZnO-Bi2O3-based varistors. The main goal of present paper is investigating the influences of sodium impurities (<0.1 wt%) on the electrical and dielectric properties of ZnO-based varistors. The results show that with the increase of Na amount, the varistor breakdown field remains stable at first and then begins to decrease from ∼210V/mm to 200V/mm; the residual voltage ratio reaches to the lowest value when the Na amount is at 0.0005∼0.0020 wt%. The relaxation loss peaks of samples at low temperature decrease at first and then increase which are closely related to variation of residual voltage ratio. It turned out that sodium impurity will influence the intrinsic defects in ZnO-based varistors, and the performances of samples are improved with trace of sodium impurity.

KW - Dielectric properties

KW - ZnO varistor

KW - electrical properties

KW - sodium impurity

UR - https://www.scopus.com/pages/publications/84988416906

U2 - 10.1109/ICD.2016.7547819

DO - 10.1109/ICD.2016.7547819

M3 - 会议稿件

AN - SCOPUS:84988416906

T3 - Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016

SP - 1143

EP - 1146

BT - Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 1st IEEE International Conference on Dielectrics, ICD 2016

Y2 - 3 July 2016 through 7 July 2016

ER -

Electrical and dielectric properties of Na-doped ZnO varistors

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