Microwave dielectric properties of Na2O-Ln2O3-MoO3-TiO2 (Ln = Nd, La and Ce) system with low-sintering temperature

被引：0

作者：

Li, Wen-Bo ^{[1
]}

Pang, Li-Xia ^{[1
]}

Wang, Xiao-Long ^{[1
]}

Liu, Wei-Guo ^{[1
]}

Yao, Xiaogang ^{[2
]}

Lin, Huixing ^{[2
]}

Liu, Wen-Feng ^{[3
]}

Zhou, Di ^{[4
]}

机构：

[1] Xian Technol Univ, Lab Thin Film Tech & Opt Test, Xian 710032, Shaanxi, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Device, Shanghai, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian, Shaanxi, Peoples R China

[4] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Key Lab Multifunct Mat & Struct, Minist Educ, Xian 710049, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2025年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

La and Ce ceramics; LTCC; microwave dielectric properties; Na2O-Ln(2)O(3)-MoO3-TiO2 (Ln = Nd); temperature coefficient of resonant frequency; PHASE EVOLUTION; CRYSTAL-STRUCTURE; SCHEELITE; CERAMICS; BIVO4; CA;

D O I：

10.1111/ijac.14983

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：

This study examines the low-loss and temperature-stable Na2O-Ln(2)O(3)-MoO3-TiO2 (Ln = Nd, La and Ce) system, synthesized via a solid-state process at low-sintering temperatures ranging from 840 degrees C to 900 degrees C The structure, microstructure and microwave properties of the Na(0.5)Ln(0.5)MoO(4)-TiO2 (Ln = Nd, La and Ce) ceramics as a function of the sintering temperature were studied. The results of XRD patterns and microstructure characterization showed that the main phase in compositions belong to tetragonal scheelite and tetragonal structure. The ceramic composition Na(0.5)Ln(0.5)MoO(4)-TiO2 (Ln = Nd, La and Ce), sintered at 840 degrees C-900 degrees C for 2 hours, demonstrated excellent microwave dielectric properties, exhibiting relative dielectric constant (epsilon(r)) of 13.9-14.4, Q x f value of about 31 100 (at 9.66 GHz) - 48 600 GHz (at 9.33 GHz), and temperature coefficient of -8.1 to -1 ppm/degrees C. Our work designs temperature-stable microwave dielectric ceramics with low-sintering temperature for LTCC technology applications.

引用

页数：8

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