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Microwave Dielectric Properties and Low‐Temperature Cofiring of BaTe 4 O 9 with Aluminum Metal Electrode
Author(s) -
Kwon DoKyun,
Lanagan Michael T.,
Shrout Thomas R.
Publication year - 2005
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/j.1551-2916.2005.00613.x
Subject(s) - materials science , temperature coefficient , dielectric , cofiring , ceramic , electrode , microwave , atmospheric temperature range , aluminium , crystallite , electrical resistivity and conductivity , composite material , analytical chemistry (journal) , metallurgy , optoelectronics , electrical engineering , combustion , chemistry , thermodynamics , physics , organic chemistry , chromatography , quantum mechanics , engineering
Polycrystalline BaTe 4 O 9 ceramic compound was investigated as a promising microwave dielectric compound for low‐temperature cofired ceramics (LTCC) applications. The binary phase BaTe 4 O 9 was synthesized and subsequently densified over the temperature range of only 500°–550°C, which allows for low‐temperature cofiring with aluminum metal. The dielectric properties of BaTe 4 O 9 ceramics sintered at 550°C for 2 h were determined in the microwave region of 12–14 GHz. The dielectric constant and Q × f product obtained were 17.5 and 54 700 GHz at 12 GHz, respectively. The temperature coefficient of resonance frequency showed a negative value of −90 ppm/°C. In terms of its evaluation for LTCC, the BaTe 4 O 9 composition was found to be chemically compatible and successfully cofired with highly conductive aluminum electrode, while maintaining good electrical performance.