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Tunable microwave dielectric properties in SrO‐V 2 O 5 system through compositional modulation
Author(s) -
Li Chunchun,
Yin Changzhi,
Deng Ming,
Shu Longlong,
Khaliq Jibran
Publication year - 2020
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.16955
Subject(s) - temperature coefficient , sintering , materials science , permittivity , ceramic , analytical chemistry (journal) , dielectric , relative permittivity , microwave , vanadium , mineralogy , chemistry , composite material , optoelectronics , metallurgy , physics , chromatography , quantum mechanics
Adjustment on resonance frequency stability against the sintering temperature of Sr 3 V 2 O 8 was realized by adjusting the Sr:V mole ratio. Effects of Sr:V ratio on sintering behavior and dielectric properties of Sr 3 V 2 O 8 were studied. The sintering temperature was sucessfully reduced to 950°C from 1150°C. With increasing vanadium content, both relative permittivity and quality factor decreased, while the temperature coefficient of resonance frequency shifted from positive to negative values. Especially, a near‐zero τ f of −1.1 ppm/°C along with a low permittivity ( ε r ) of 9.8 and a quality factor Q × f of 24 120 GHz was successfully achieved in Sr 3‐ y V 2 O 8‐ y ceramic ( y = 0.6, sintered at 950°C). The wide compositional and processing adjustment window, favorable dielectric performances, and good chemical compatibility with silver render Sr 3‐ y V 2 O 8‐ y ceramics potential candidates in multilayer electronic devices.
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