Affiliation:
1. Guangxi Universities Key Laboratory of Non‐ferrous Metal Oxide Electronic Functional Materials and Devices, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering Guilin University of Technology Guilin China
2. College of Science Guilin University of Technology Guilin China
Abstract
AbstractX‐ray diffractometer with Rietveld refinement and Raman spectroscopy were used for phase analysis. Ca doping results in decreased εr (24.09–21.52), Q × f (68 914–40 110 GHz), and τf (−50.0 ppm/°C to −60.2 ppm/°C) all decrease, which obviously does not conform to the mutual constraint relationship among the three parameters of microwave dielectric properties. The εr of Ce1−xCaxO2−x ceramics is affected by the ion polarizability and the Ce rattling and valence states, among which the rattling of Ce cations plays a dominant role. The presence of oxygen vacancies in Ce1−xCaxO2−x ceramics explains the decrease in Q × f. The τε, εr, and αL are responsible for the decrease in τf, especially for the ταm‐3αL values.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Guangxi Zhuang Autonomous Region
Subject
Materials Chemistry,Ceramics and Composites
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献