Crystal structure and microwave dielectric properties of low-permittivity Sr2MgSi2O7 ceramic

被引：23
作者：
Xiao, Mi [1 ,2 ]
Wei, Yanshuang [1 ,2 ]
Sun, Hongrui [1 ,2 ]
Lou, Jie [1 ,2 ]
Zhang, Ping [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Minist Educ, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2018年 / 29卷 / 23期
基金：
中国国家自然科学基金;
关键词：
BA;
D O I：
10.1007/s10854-018-0168-9
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Low-permittivity Sr2MgSi2O7 ceramics with tetragonal crystal structure were prepared through the conventional solid-state method. X-ray diffraction patterns and scanning electron microscopy were used to analyze the phase and micromorphology of the specimens sintered at temperature from 1260 to 1320 degrees C. The bond ionicity, lattice energy and bond energy of Sr2MgSi2O7 ceramics were calculated to investigate the relationships between microwave dielectric properties and microstructures. Optimum microwave dielectric properties were obtained when the sample was sintered at 1280 degrees C for 4h: epsilon(r)=6.85, Qxf(0)=22,530GHz (f=9.20GHz), (f)=-32ppm/degrees C.
引用
收藏
页码：20339 / 20346
页数：8
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