A new high-Qxf Li4NbO4F microwave dielectric ceramic for LTCC applications

被引：51
|
作者：
Chu, Xin [1 ,2 ]
Jiang, Juan [1 ,2 ]
Wang, Jinzhao [1 ,2 ]
Wu, Yuanchuang [1 ,2 ]
Gan, Lin [1 ,2 ]
Zhang, Tianjin [1 ,2 ]
机构：
[1] Hubei Univ, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
[2] Hubei Univ, Sch Mat Sci & Engn, Wuhan 430062, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 03期
基金：
美国国家科学基金会;
关键词：
Rock salt; Microwave dielectric properties; LTCC; CRYSTAL-STRUCTURE; PHASE EVOLUTION; SPECTRA;
D O I：
10.1016/j.ceramint.2020.09.280
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A novel microwave dielectric ceramic material, Li4NbO4F, was fabricated by the solid-state reaction method. The microwave dielectric properties, sintering characteristics, and crystal structures of the Li4NbO4F ceramic samples were investigated. It was found that the Li4NbO4F ceramic samples can be successfully sintered at low temperatures (e.g., 750-875 degrees C). The samples exhibited a single cubic rock salt phase and possessed homogenous microstructures and outstanding microwave dielectric properties. The optimal properties of Q x f = 61111 GHz, epsilon(r) = 15.2, and tau(f) = -51 ppm/degrees C were achieved in the ceramic sample sintered at 825 degrees C. Additionally, the ceramic samples showed superior compatibility with Ag, indicating that Li4NbO4F is a promising low temperature co-fired ceramic (LTCC) material.
引用
收藏
页码：4344 / 4351
页数：8
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