Low-temperature sintering and microwave dielectric properties of BaO·(Nd1-xBix)2O 3·4TiO2 by the glass additions

In Sun Cho, Dong Wan Kim, Jeong Ryeol Kim, Kug Sun Hong

Research output: Contribution to journalConference article

57 Citations (Scopus)

Abstract

The system BaO·(Nd1-xBix)2O 3·4TiO2 solid solution containing lithium borosilicate glass were prepared and examined as a low-temperature co-fired ceramics (LTCC). The sintering properties of the low-temperature sintered BaO·(Nd1-xBix)2O 3·4TiO2 with glass frit were investigated using dilatometer, SEM and TEM. The microwave dielectric properties were measured using a network analyzer. The addition of glass to BaO·(Nd 1-xBix)2O3·4TiO2 significantly lowered the sintering temperature to ∼900°C in comparison to ∼1300°C for samples without glass. The formation of liquid phase present in the low temperature sintered sample was confirmed using TEM. It was found that thermal properties of the added lithium borosilicate glass dominated the sintering properties of BaO·(Nd1-xBix) 2O3·4TiO2 including shrinkage onset temperature and shrinkage rate. The sample of BaO·(Nd 0.8Bi0.2)2O3·4TiO 2 with 10wt.% glass sintered at 900°C exhibited a quality factor (Q×f) of 2200GHz, a εr of 68, and a τf of 55ppm/°C.

Original languageEnglish
Pages (from-to)1181-1185
Number of pages5
JournalCeramics International
Volume30
Issue number7
DOIs
Publication statusPublished - 2004
Externally publishedYes
Event3rd Asian Meeting on Electroceramics - Singapore, Singapore
Duration: 2003 Dec 72003 Dec 11

Keywords

  • A. Sintering
  • C. Dielectric properties
  • D. Glass ceramics
  • LTCC

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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