Effect of sintering atmosphere on the electrical and optical properties of (ZnO)1-x(MnO2)x NTCR ceramics

被引：17
作者：
Yan, Xiaoxing [1 ]
Xu, Guoyue [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211100, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 16期
基金：
中国国家自然科学基金;
关键词：
(ZnO)(1-x)(MnO2)(x); Sintering atmosphere; NTCR; PL; ZNO THIN-FILMS; THERMISTORS; COMPOSITE; MICROSTRUCTURE; LUMINESCENCE; TEMPERATURE; NANOWIRES; STABILITY; VARISTORS; MANGANESE;
D O I：
10.1016/j.physb.2009.04.045
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Nominal composition of (ZnO)(1-x)(MnO2)(x)(0.005 <= x <= 0.2) ceramics have been prepared by the standard solid-state reaction method in three different sintering atmospheres: Ar, air, and reductive atmosphere. The effect of sintering atmosphere on the electron spin resonance (ESR), negative temperature coefficient of resistivity (NTCR), and photoluminescence (PL) properties of (ZnO)(1-x)(MnO2)(x) ceramics has been investigated in detail. The results demonstrate that the sintering atmosphere has significant effects on the ESR signals of (ZnO)(1-x)(MnO2)(x); the NTCR of the samples sintered in air is larger than those sintering in Ar and reductive atmosphere; the deep-level PL related to oxygen vacancy increases when sintered in the reductive atmosphere. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2377 / 2381
页数：5
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