Phase structure, sintering behavior and adjustable microwave dielectric properties of Mg1-xLi2xTixO1+2x solid solution ceramics

被引：69

作者：

Zhou, Huanfu ^{[1
]}

Tan, Xianghu ^{[1
]}

Huang, Jin ^{[1
]}

Wang, Nan ^{[1
]}

Fan, Guangchao ^{[1
]}

Chen, Xiuli ^{[1
]}

机构：

[1] Guilin Univ Technol, Guangxi Minist Prov Jointly Constructed Cultivat, Guangxi Key Lab Univ Clean Met & Comprehens Utili, Collaborat Innovat Ctr Explorat Hidden Nonferrous, Guilin 541004, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 696卷

关键词：

Rock salt structure; Solid solution; Microwave dielectric properties; TEMPERATURE; EVOLUTION;

D O I：

10.1016/j.jallcom.2016.12.114

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：

Mg1-xLi2xTixO1-2x (1/5 <= x <= 1/2) solid solution ceramics were prepared by the solid state reaction method. The sintering behavior, microstructure and microwave dielectric properties of ceramics were investigated. X-ray diffraction patterns showed that MgO and Li2TiO3 could form Mg1-xLi2xTixO1-2x solid solutions with a rock salt structure. With increasing x values, the unit cell parameters of ceramics decreased, both the Qxf value and bulk density increased firstly, reached the max value and then decreased. Most importantly, the thermal stability of microwave dielectric properties for ceramics was improved. When x = 1/4, Li2Mg3TiO6 ceramics exhibited good microwave dielectric properties with Qxf = 110,703 GHz, epsilon(r) = 13.6 and tau(f) = -35.1 ppm/degrees C. (C) 2016 Published by Elsevier B.V.

引用

页码：1255 / 1259

页数：5

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