Microwave dielectric properties of AWO4 (A = Ca, Ba, Sr) ceramics synthesized via high energy ball milling method

被引：44

作者：

Cheng, Lin ^{[1
]}

Liu, Peng ^{[1
]}

Qu, Shi-Xian ^{[1
]}

Zhang, Huai-Wu ^{[2
]}

机构：

[1] Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian, Peoples R China

[2] Univ Elect Sci & Technol China, Key Lab Elect Thin Film & Integrated Device, Chengdu 610054, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 581卷

基金：

中国国家自然科学基金;

关键词：

Mechanical alloying; Nanopowders; Ceramics; Microwave dielectric properties; CAWO4; ZNWO4;

D O I：

10.1016/j.jallcom.2013.06.133

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The AWO(4) (A = Ca, Sr, Ba) compounds with scheelite structure were synthesized by high energy ball milling for 30 min and the average particle size was reduced to about 120 nm after milling 30 h. AWO(4) ceramics were well sintered at relatively low temperatures of 900-1000 degrees C, 200-400 degrees C lower than those required by a conventional solid state reaction technique. The samples of CaWO4, SrWO4, and BaWO4 ceramics have dense microstructures and excellent microwave dielectric properties, epsilon(r) = 10.7, 8.6, 8.4; Q x f = 62,100 GHz, 57,500 GHz, 58,800 GHz; and tau(f) = -48 ppm/degrees C, -52 ppm/degrees C, -64 ppm/degrees C, respectively. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：553 / 557

页数：5

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