Microwave dielectric properties of CaZr(BQ3)2 ceramics

Myung Hwa Nam; Hyo Tae Kim; Jong Hee Kim; Sahn Nahm

doi:10.4191/KCERS.2007.44.5.173

Microwave dielectric properties of CaZr(BQ₃)₂ ceramics

Myung Hwa Nam, Hyo Tae Kim, Jong Hee Kim, Sahn Nahm

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The microstructure and microwave dielectric properties of dolomite type borates, CaZr(BO₃)₂ ceramics prepared by conventional mixed oxide method were explored. The sintering temperature of CaZr(BO ₃)₂ ceramics could be reduced from 1150°C to 925°C with little amount of sintering additives. Microwave dielectric properties of 3 wt% Bi₂O₃-CuO added CaZr(BO₃)₂ ceramics sintered at 925°C were K ≈10.4, Q × f ≈80,000 GHz and TCF≈+2 ppm/°C Thus obtained LTCC tape was co-fired with Ag paste for compatibility test and revealed no sign of Ag reaction with the ceramics. Therefore, CaZr(BO₃)₂ ceramics is considered as a possible candidate material for low temperature co-fired multilayer devices.

Original language	English
Pages (from-to)	173-178
Number of pages	6
Journal	Journal of the Korean Ceramic Society
Volume	44
Issue number	5
DOIs	https://doi.org/10.4191/KCERS.2007.44.5.173
Publication status	Published - 2007 May

Keywords

CaZr(BO)
Co-fire
Compatibility
LTCC
Microwave dielectric properties

ASJC Scopus subject areas

Ceramics and Composites

Access to Document

10.4191/KCERS.2007.44.5.173

Cite this

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title = "Microwave dielectric properties of CaZr(BQ3)2 ceramics",

abstract = "The microstructure and microwave dielectric properties of dolomite type borates, CaZr(BO3)2 ceramics prepared by conventional mixed oxide method were explored. The sintering temperature of CaZr(BO 3)2 ceramics could be reduced from 1150°C to 925°C with little amount of sintering additives. Microwave dielectric properties of 3 wt% Bi2O3-CuO added CaZr(BO3)2 ceramics sintered at 925°C were K ≈10.4, Q × f ≈80,000 GHz and TCF≈+2 ppm/°C Thus obtained LTCC tape was co-fired with Ag paste for compatibility test and revealed no sign of Ag reaction with the ceramics. Therefore, CaZr(BO3)2 ceramics is considered as a possible candidate material for low temperature co-fired multilayer devices.",

keywords = "CaZr(BO), Co-fire, Compatibility, LTCC, Microwave dielectric properties",

author = "Nam, {Myung Hwa} and Kim, {Hyo Tae} and Kim, {Jong Hee} and Sahn Nahm",

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AB - The microstructure and microwave dielectric properties of dolomite type borates, CaZr(BO3)2 ceramics prepared by conventional mixed oxide method were explored. The sintering temperature of CaZr(BO 3)2 ceramics could be reduced from 1150°C to 925°C with little amount of sintering additives. Microwave dielectric properties of 3 wt% Bi2O3-CuO added CaZr(BO3)2 ceramics sintered at 925°C were K ≈10.4, Q × f ≈80,000 GHz and TCF≈+2 ppm/°C Thus obtained LTCC tape was co-fired with Ag paste for compatibility test and revealed no sign of Ag reaction with the ceramics. Therefore, CaZr(BO3)2 ceramics is considered as a possible candidate material for low temperature co-fired multilayer devices.

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