Tetra-needle zinc oxide/silica composites: High-temperature dielectric properties at X-band

被引：21
作者：
Yuan, Jie [1 ,2 ]
Song, Wei-Li [1 ]
Fang, Xiao-Yong [1 ,3 ]
Shi, Xiao-Ling [1 ]
Hou, Zhi-Ling [1 ]
Cao, Mao-Sheng [1 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[2] Minzu Univ China, Sch Informat Engn, Beijing 100081, Peoples R China
[3] Yanshan Univ, Sch Sci, Qinhuangdao 066004, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2013年 / 154卷
基金：
美国国家科学基金会;
关键词：
Zinc oxide; High temperature; Dielectric properties; Loss tangent; MICROWAVE-ABSORPTION PROPERTIES; SINGLE-CRYSTAL NANORINGS; GROWTH-MECHANISM; ZNO; NANOBELTS; EMISSION;
D O I：
10.1016/j.ssc.2012.10.028
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Nano-structural ZnO of unique electrical and optical properties is highly attractive in dielectric and microwave applications, specifically considered as ideal fillers for achieving light-weight composites. In this work, tetra-needle ZnO (T-ZnO) by a direct combustion approach was selected as the filler in silica nanopowders for fabricating T-ZnO/SiO2 composites. Temperature effects on dielectric properties of the composites were investigated in the temperature range of 300-700 degrees C at 8.2-12.4 GHz. The observed imaginary permittivity and loss tangent was found to be temperature dependent, and the mechanism associated with relaxation and electrically conductive loss was discussed. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：64 / 68
页数：5
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