Ultra wide range dielectric spectroscopy of strontium titanate-strontium zirconate solid solution

Takaaki Tsurumi, Takasi Teranisi, Satoshi Wada, Hirofumi Kakemoto, Osamu Fukunaga, Masafumi Nakada, Jun Akedo

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The dielectric properties vary significantly with the B-site cations in ABO 3 perovskite-type oxides. In this study, we tried to understand the difference in the dielectric properties between SrTiO 3 (STO, ε r = 290, Qf=3000 GHz) and SrZrO 3 (SZO, ε r = 30, Qf= 13700 GHz) by measuring the dielectric spectroscopy of their solid solutions in a wide frequency range. The dielectric permittivity and the loss tangent (tan δ) of SrZr xTi 1-xO 3 (STZ, 0.0≦x≦ 1.0) ceramics were evaluated up to a GHz region using the planer electrode method and ring resonator method. The four-parameter-semi-quantum (FPSQ) model was employed to analyze the Infrared-reflectivity (IR-reflectivity) data of the STZ ceramics. Both dielectric properties up to the GHz region and IR reflectivity in the THz region were incorporated in the analysis to accurately determine the optical phonon parameters. Ultra wide band dielectric spectra of the SZT ceramics and the STO single crystal were presented. The ionic polarization dominantly determined the dielectric permittivity of the SZT ceramics and the STO single crystal. High permittivity of STO was due to the Slater mode. The decrease of dielectric permittivity and the Q-factor ( = 1/tan δ) with an increasing Zr content (x) in STZ ceramics was attributed to the depression of the Slater mode. The effect of the optical phonon parameters on the permittivity and tan δ in the microwave region was simulated to general ize the results obtained for the STZ ceramics.

Original languageEnglish
Pages (from-to)774-781
Number of pages8
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume114
Issue number1333
DOIs
Publication statusPublished - 2006
Externally publishedYes

Fingerprint

Dielectric spectroscopy
Strontium
strontium
Solid solutions
Permittivity
solid solutions
ceramics
permittivity
Dielectric properties
tangents
spectroscopy
dielectric properties
Single crystals
reflectance
Perovskite
single crystals
Oxides
Cations
Resonators
Positive ions

Keywords

  • Dielectric relaxation
  • Dielectric spectroscopy
  • Dielectrics
  • Polarization
  • Strontium titanate
  • THz

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Ultra wide range dielectric spectroscopy of strontium titanate-strontium zirconate solid solution. / Tsurumi, Takaaki; Teranisi, Takasi; Wada, Satoshi; Kakemoto, Hirofumi; Fukunaga, Osamu; Nakada, Masafumi; Akedo, Jun.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 114, No. 1333, 2006, p. 774-781.

Research output: Contribution to journalArticle

Tsurumi, Takaaki ; Teranisi, Takasi ; Wada, Satoshi ; Kakemoto, Hirofumi ; Fukunaga, Osamu ; Nakada, Masafumi ; Akedo, Jun. / Ultra wide range dielectric spectroscopy of strontium titanate-strontium zirconate solid solution. In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan. 2006 ; Vol. 114, No. 1333. pp. 774-781.
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AU - Tsurumi, Takaaki

AU - Teranisi, Takasi

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AU - Kakemoto, Hirofumi

AU - Fukunaga, Osamu

AU - Nakada, Masafumi

AU - Akedo, Jun

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AB - The dielectric properties vary significantly with the B-site cations in ABO 3 perovskite-type oxides. In this study, we tried to understand the difference in the dielectric properties between SrTiO 3 (STO, ε r = 290, Qf=3000 GHz) and SrZrO 3 (SZO, ε r = 30, Qf= 13700 GHz) by measuring the dielectric spectroscopy of their solid solutions in a wide frequency range. The dielectric permittivity and the loss tangent (tan δ) of SrZr xTi 1-xO 3 (STZ, 0.0≦x≦ 1.0) ceramics were evaluated up to a GHz region using the planer electrode method and ring resonator method. The four-parameter-semi-quantum (FPSQ) model was employed to analyze the Infrared-reflectivity (IR-reflectivity) data of the STZ ceramics. Both dielectric properties up to the GHz region and IR reflectivity in the THz region were incorporated in the analysis to accurately determine the optical phonon parameters. Ultra wide band dielectric spectra of the SZT ceramics and the STO single crystal were presented. The ionic polarization dominantly determined the dielectric permittivity of the SZT ceramics and the STO single crystal. High permittivity of STO was due to the Slater mode. The decrease of dielectric permittivity and the Q-factor ( = 1/tan δ) with an increasing Zr content (x) in STZ ceramics was attributed to the depression of the Slater mode. The effect of the optical phonon parameters on the permittivity and tan δ in the microwave region was simulated to general ize the results obtained for the STZ ceramics.

KW - Dielectric relaxation

KW - Dielectric spectroscopy

KW - Dielectrics

KW - Polarization

KW - Strontium titanate

KW - THz

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