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Low‐Temperature Sintering and Microwave Dielectric Properties of CaMoO 4 ‐Based Temperature Stable LTCC Material
Author(s) -
Pang LiXia,
Zhou Di,
Liu WeiGuo
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12996
Subject(s) - sintering , materials science , temperature coefficient , ceramic , microwave , permittivity , dielectric , phase (matter) , tetragonal crystal system , microstructure , analytical chemistry (journal) , mineralogy , composite material , chemistry , optoelectronics , telecommunications , organic chemistry , chromatography , computer science
The CaMoO 4 – x Y 2 O 3 – x Li 2 O ceramics were prepared by the solid‐state reaction method. The sintering behavior, phase evolution, microstructure, and microwave dielectric properties were investigated. CaMoO 4 solid solution was obtained when x = 0.030, and two‐phase system including tetragonal CaMoO 4 phase and cubic Y 2 O 3 phase formed when 0.066 ≤ x ≤ 1.417. A temperature stable CaMoO 4 ‐based microwave dielectric ceramic with ultralow sintering temperature (775°C) was obtained in the CaMoO 4 – x Y 2 O 3 – x Li 2 O system when x = 0.306, which showed good microwave dielectric properties with a low permittivity of 9.5, a high Q f value of 63 240 GHz, and a near‐zero temperature coefficient of resonant frequency of +7.2 ppm/°C.
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