宁夏大学学报（自然科学版）2025，Vol.46Issue(1)：90-96,7.
新型Dy2TiO5微波介质陶瓷的制备及其性能分析
Synthesis and Properties of Novel Dy2TiO5 Microwave Dielectric Ceramics
摘要
Abstract
Microwave dielectric ceramics,renowned for their superior dielectric properties,are pivotal materials for manufacturing high-performance communication components such as filters and resonators,addressing the demands for miniaturization and integration in modern devices.In this study,pure-phase Dy2TiO5 microwave dielectric ceramics were synthesized via a conventional solid-state reaction method at sintering temperatures ranging from 1 400 to 1 500℃.The effects of sintering temperature on the crystal structure,relative density,microstructure,and dielectric properties were systematically investigated.Results indicate that Dy2TiO5 ceram-ics sintered at 1 475℃ exhibit optimal performance with a high relative density of 94.3%,homogeneous micro-structure,and excellent dielectric properties:a relative permittivity(εr)of 29.19,a quality factor(Q×f)of 13,829 GHz,and a temperature coefficient of resonant frequency(τf)of-19.4×106℃-1.Furthermore,temperature-and frequency-dependent dielectric behavior was analyzed through dielectric spectroscopy,ther-mal expansion measurements,and far-infrared spectroscopy.Key findings reveal that porosity significantly influences the dielectric constant,while ionic polarizability serves as the intrinsic determinant of dielectric perfor-mance.These results demonstrate the promising potential of Dy2TiO3 ceramics for microwave dielectric applica-tions.关键词
Dy2TiO5陶瓷/稀土钛酸盐/固相烧结/介电性能/远红外Key words
Dy2TiO5 ceramics/rare-earth titanates/solid-state sintering/dielectric properties/far-infrared分类
建筑与水利引用本文复制引用
朱国斌,李纯纯,熊思宇,朱肖伟,陈德钦,刘来君,施晓东..新型Dy2TiO5微波介质陶瓷的制备及其性能分析[J].宁夏大学学报（自然科学版）,2025,46(1):90-96,7.基金项目
国家自然科学基金资助项目(62061011) （62061011）
