Improvement of dielectric loss of (Ba,Sr)(Ti,Zr)O3 ferroelectrics for tunable devices

Jong Yoon Ha, Ji Won Choi, Chong Yun Kang, Jin Sang Kim, Seok Jin Yoon, Doo Jin Choi, Hyun Jai Kim

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


(Ba0.6Sr0.4)(Ti1-xZrx)O3 (0.05 ≤ x ≤ 0.3) ferroelectric materials have cubic perovskite structure and show paraelectric properties at room temperature. Curie point shifted to a negative value as increasing Zr content in (Ba0.6Sr0.4)(Ti1-xZrx)O3 system. When Zr substituted 0.1 mol, the dielectric constant, dielectric loss, tunability, Curie point and FOM were 4500, 0.0005, 63%, -1.6 °C and 1260, respectively. This composition shows excellent microwave dielectric properties than those of (Ba0.6Sr0.4)TiO3 ferroelectrics, which are limelight materials for tunable devices such as varactors, phase shifters and frequency agile filters, etc.

Original languageEnglish
Pages (from-to)2747-2751
Number of pages5
JournalJournal of the European Ceramic Society
Issue number8-9 SPEC. ISS.
Publication statusPublished - 2007
Externally publishedYes


  • Dielectrics
  • Ferroelectrics
  • Perovskites
  • Tunable devices

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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