Low-temperature sintering and microwave dielectric properties of CaTi1-x(Fe0.5Nb0.5)x O3 ceramics with B2O3 addition

Kui Won Kang, Hyo Tae Kim, Michael Lanagan, Thomas Shrout

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Abstract

CaTi1-x(Fe0.5Nb0.5)x O3 (0 ≤ x ≤ 1) dielectrics were synthesized via the solid state reaction route and structure analysis was performed together with the dielectric characterization. The substitution of Ti4+ by Fe3+/Nb5+ and developed phase were studied by X-ray diffraction. The dielectric constant and temperature coefficient of resonant frequency decrease rapidly with an increase of x. The influence of 1-5 wt.% B2O3 as a sintering additive investigated at CaTi0.5(Fe0.5Nb0.5)0.5 O3 solid solutions. The dielectric properties were found to strongly depend on the sintering conditions and contents of B2O3 additions. εr = 52.3, Q × fo = 2930 GHz and Tf = 13 ppm/°C were obtained for CaTi0.5(Fe0.5Nb0.5)0.5 O3 specimen 3 wt.% B2O3 sintered at 900 °C for 2 h.

Original languageEnglish (US)
Pages (from-to)1385-1391
Number of pages7
JournalMaterials Research Bulletin
Volume41
Issue number7
DOIs
StatePublished - Jul 13 2006

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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