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Physics of the Solid State

, Volume 54, Issue 5, pp 972–974 | Cite as

Infrared and ESR spectroscopy of KTaO3 : Er

  • A. SkvortsovEmail author
  • V. Trepakov
  • D. Nuzhnyi
  • V. Laguta
  • L. Jastrabik
Proceedings of the XIX All-Russian Conference on Physics of Ferroelectrics (VKS-XIX) Moscow, Russia, June 19–23, 2011

Abstract

Infrared reflection and ESR spectra of KTaO3 : Er3+ single crystals have been investigated. The frequency of the lowest optical phonon mode TO1 has been found to increase as compared to undoped KTaO3 crystals, which indicates the suppression of the ferroelectric instability of the system. The ESR spectra have revealed the presence of two Er3+ centers of different (cubic and non-cubic) symmetries in KTaO3 : Er3+.

Keywords

Electron Spin Resonance Erbium Strontium Titanate Complex Dielectric Function Random Static Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • A. Skvortsov
    • 1
    Email author
  • V. Trepakov
    • 1
    • 2
  • D. Nuzhnyi
    • 2
  • V. Laguta
    • 2
    • 3
  • L. Jastrabik
    • 2
  1. 1.Ioffe Physical-Technical InstituteRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Institute of PhysicsAcademy of Sciences of the Czech RepublicPraha 8Czech Republic
  3. 3.Frantsevich Institute for Problems of Materials ScienceNational Academy of Sciences of UkraineKyivUkraine

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