The origin of varistor property of SrTiO3-based ceramics

Jianying Li; Shengtao Li; Fuyi Liu; M. A. Alim; G. Chen

doi:10.1023/A:1023916716329

The origin of varistor property of SrTiO₃-based ceramics

Jianying Li
, Shengtao Li
, Fuyi Liu
, M. A. Alim
, G. Chen

School of Electrical Engineering

Xi'an Jiaotong University
Alabama A and M University
University of Southampton

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

The role of oxygen in the heat-treatment process of SrTiO₃ varistor ceramics has been investigated in this paper. The varistor voltage of SrTiO₃ ceramics has been found to be independent of the sample thickness and it increases with the heat-treatment temperature. It has been further revealed that the dielectric property is mainly governed by a highly resistive surface layer. The XPS results of Mn 2p and O 1s suggest that the surface layer is formed by oxygen diffusion and surface chemisorption at grain boundaries during the heat treatment in air. The chemisorption of oxygen in grain boundaries, which leads to the highly resistive surface layer, is the origin of the varistor property of SrTiO₃ ceramics.

Original language	English
Pages (from-to)	483-486
Number of pages	4
Journal	Journal of Materials Science: Materials in Electronics
Volume	14
Issue number	8
DOIs	https://doi.org/10.1023/A:1023916716329
State	Published - Aug 2003

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title = "The origin of varistor property of SrTiO3-based ceramics",

abstract = "The role of oxygen in the heat-treatment process of SrTiO3 varistor ceramics has been investigated in this paper. The varistor voltage of SrTiO3 ceramics has been found to be independent of the sample thickness and it increases with the heat-treatment temperature. It has been further revealed that the dielectric property is mainly governed by a highly resistive surface layer. The XPS results of Mn 2p and O 1s suggest that the surface layer is formed by oxygen diffusion and surface chemisorption at grain boundaries during the heat treatment in air. The chemisorption of oxygen in grain boundaries, which leads to the highly resistive surface layer, is the origin of the varistor property of SrTiO3 ceramics.",

author = "Jianying Li and Shengtao Li and Fuyi Liu and Alim, \{M. A.\} and G. Chen",

year = "2003",

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T1 - The origin of varistor property of SrTiO3-based ceramics

AU - Li, Jianying

AU - Li, Shengtao

AU - Liu, Fuyi

AU - Alim, M. A.

AU - Chen, G.

PY - 2003/8

Y1 - 2003/8

N2 - The role of oxygen in the heat-treatment process of SrTiO3 varistor ceramics has been investigated in this paper. The varistor voltage of SrTiO3 ceramics has been found to be independent of the sample thickness and it increases with the heat-treatment temperature. It has been further revealed that the dielectric property is mainly governed by a highly resistive surface layer. The XPS results of Mn 2p and O 1s suggest that the surface layer is formed by oxygen diffusion and surface chemisorption at grain boundaries during the heat treatment in air. The chemisorption of oxygen in grain boundaries, which leads to the highly resistive surface layer, is the origin of the varistor property of SrTiO3 ceramics.

AB - The role of oxygen in the heat-treatment process of SrTiO3 varistor ceramics has been investigated in this paper. The varistor voltage of SrTiO3 ceramics has been found to be independent of the sample thickness and it increases with the heat-treatment temperature. It has been further revealed that the dielectric property is mainly governed by a highly resistive surface layer. The XPS results of Mn 2p and O 1s suggest that the surface layer is formed by oxygen diffusion and surface chemisorption at grain boundaries during the heat treatment in air. The chemisorption of oxygen in grain boundaries, which leads to the highly resistive surface layer, is the origin of the varistor property of SrTiO3 ceramics.

UR - https://www.scopus.com/pages/publications/0038106611

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M3 - 文章

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SN - 0957-4522

VL - 14

SP - 483

EP - 486

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 8

ER -

The origin of varistor property of SrTiO₃-based ceramics

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