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Journal of the Korean Physical Society

, Volume 66, Issue 9, pp 1386–1388 | Cite as

X-ray absorption study of the local dipole moment in SrTiO3 under uniaxial pressure

  • Chisato Temba
  • Shuhei Kawakami
  • Nobuo Nakajima
  • Naoki Ishimatsu
  • Hiroshi MaruyamaEmail author
Article

Abstract

X-ray absorption spectra under uniaxial pressure were measured at the Ti K-edge of a SrTiO3 single crystal in order to obtain direct evidence for the ferroelectric transition that is expected on the basis of second harmonic generation studies. A uniaxial pressure was applied perpendicular to the ab-plane. The pre-edge peak, which corresponds to Ti 3d e g -O 2 bonding, shows little change across the transition temperature of 40 K at 1 GPa. This indicates that a local electric dipole moment is not induced under uniaxial pressure, as opposed to the macroscopic ferroelectric moments that are predicted to be induced along the ab-plane.

Keywords

Uniaxial pressure Phase transition Strontium titanate 

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Copyright information

© The Korean Physical Society 2015

Authors and Affiliations

  • Chisato Temba
    • 1
  • Shuhei Kawakami
    • 1
  • Nobuo Nakajima
    • 1
  • Naoki Ishimatsu
    • 1
  • Hiroshi Maruyama
    • 1
    Email author
  1. 1.Graduate School of ScienceHiroshima University, Higashi-HiroshimaHiroshimaJapan

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