Novel high-Q x f (1-x)CeO2-xCaF2 (0.2 ≤ x ≤ 0.6) microwave dielectric ceramics sintered at medium temperatures

被引：2

作者：

Gao, Yufeng ^{[1
]}

Jiang, Juan ^{[1
]}

Wang, Jinzhao ^{[1
]}

Gan, Lin ^{[1
]}

Zhang, Tianjin ^{[1
]}

机构：

[1] Hubei Univ, Sch Mat Sci & Engn, Collaborat Innovat Ctr Adv Organ Chem Mat Coconst, Minist Educ,Key Lab Green Preparat & Applicat Fun, 368 Youyi Ave, Wuhan 430062, Hubei, Peoples R China

来源：

JOURNAL OF THE KOREAN CERAMIC SOCIETY | 2022年 / 59卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Microwave dielectric ceramics; Cubic fluorite structure; CeO2; PHASE; OXIDE; CERIA;

D O I：

10.1007/s43207-022-00223-y

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：

In this work, a new binary microwave dielectric ceramic system of (1 - x)CeO2-xCaF(2) (0.2 <= x <= 0.6) was fabricated at medium sintering temperatures. The compositional effects of on the sintering behavior, phase compositions, microstructures, and microwave dielectric properties of the samples were studied. High relative density levels (> 95%) were achieved in the (1 - x)CeO2-xCaF(2) samples at the sintering temperatures ranging from 1100 to 1350 degrees C. An increase in the content of CaF2 resulted in a decrease in the dielectric constant, an increase in the Q x f level, and a negative shift of the tau(f) value. The optimal microwave dielectric properties of epsilon(r) = 11.3, Q x f = 53,000 GHz, and tau(f) = - 102 ppm/degrees C were obtained in the sample of (1 - x)CeO2-xCaF(2) with x = 0.6 when sintered at 1300 degrees C.

引用

页码：929 / 935

页数：7

共 18 条

[1] A new high-Qxf Li4NbO4F microwave dielectric ceramic for LTCC applications [J].