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 journalArticle

20 Citations (Scopus)

Abstract

(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
Volume27
Issue number8-9 SPEC. ISS.
DOIs
Publication statusPublished - 2007 Apr 2

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Dielectric losses
Ferroelectric materials
Varactors
Phase shifters
Dielectric properties
Perovskite
Permittivity
Microwaves
Chemical analysis
Temperature
perovskite

Keywords

  • Dielectrics
  • Ferroelectrics
  • Perovskites
  • Tunable devices

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Ha, J. Y., Choi, J. W., Kang, C-Y., Kim, J. S., Yoon, S. J., Choi, D. J., & Kim, H. J. (2007). Improvement of dielectric loss of (Ba,Sr)(Ti,Zr)O3 ferroelectrics for tunable devices. Journal of the European Ceramic Society, 27(8-9 SPEC. ISS.), 2747-2751. https://doi.org/10.1016/j.jeurceramsoc.2006.11.003

Improvement of dielectric loss of (Ba,Sr)(Ti,Zr)O3 ferroelectrics for tunable devices. / Ha, Jong Yoon; Choi, Ji Won; Kang, Chong-Yun; Kim, Jin Sang; Yoon, Seok Jin; Choi, Doo Jin; Kim, Hyun Jai.

In: Journal of the European Ceramic Society, Vol. 27, No. 8-9 SPEC. ISS., 02.04.2007, p. 2747-2751.

Research output: Contribution to journalArticle

Ha, JY, Choi, JW, Kang, C-Y, Kim, JS, Yoon, SJ, Choi, DJ & Kim, HJ 2007, 'Improvement of dielectric loss of (Ba,Sr)(Ti,Zr)O3 ferroelectrics for tunable devices', Journal of the European Ceramic Society, vol. 27, no. 8-9 SPEC. ISS., pp. 2747-2751. https://doi.org/10.1016/j.jeurceramsoc.2006.11.003
Ha, Jong Yoon ; Choi, Ji Won ; Kang, Chong-Yun ; Kim, Jin Sang ; Yoon, Seok Jin ; Choi, Doo Jin ; Kim, Hyun Jai. / Improvement of dielectric loss of (Ba,Sr)(Ti,Zr)O3 ferroelectrics for tunable devices. In: Journal of the European Ceramic Society. 2007 ; Vol. 27, No. 8-9 SPEC. ISS. pp. 2747-2751.
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AB - (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.

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