Low temperature sintering and microwave dielectric properties of Ba 3Ti5Nb6O28 with B2O 3 and CuO additions

Jeong Ryeol Kim, Dong Wan Kim, Sung Hun Yoon, Kug Sun Hong

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The low sintering temperature and the good dielectric properties such as high dielectric constant (ε r ), high quality factor (Q × f), and small temperature coefficient of resonant frequency (TCF) are required for the application of chip passive components in wireless communication low temperature co-fired ceramics (LTCC). In the present study, the sintering behaviors and dielectric properties of Ba3Ti5Nb 6O28 ceramics were investigated as a function of B 2O3-CuO content. The pure Ba3Ti 5Nb6O28 system showed a high sintering temperature (1250°C) and had the good microwave dielectric properties: Q × f of 10,600 GHz, ε r of 37, TCF of -12 ppm/°C. The addition of B2O3-CuO was revealed to lower the sintering temperature of Ba3Ti5Nb6O28, 900°C and to enhance the microwave dielectric properties: Q × f of 32,500 GHz, ε r of 40, TCF of 9 ppm/°C. From the X-ray photoelectron spectroscopy (XPS) and X-ray powder diffraction (XRD) studies, these phenomena were explained in terms of the reduction of oxygen vacancies and the formation of secondary phases having the good microwave dielectric properties.

Original languageEnglish
Pages (from-to)439-443
Number of pages5
JournalJournal of Electroceramics
Volume17
Issue number2-4
DOIs
Publication statusPublished - 2006 Dec
Externally publishedYes

Keywords

  • BaTiNbO
  • Dielectric properties
  • Low temperature sintering
  • XPS

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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