Absorption spectroscopy and energy levels of rare earth impurity centres in SrxBa1-xNb2O6 crystals


Demirbilek R. , KUTSENKO A. B. , PANKRATH R., KAPPHAN S. E.

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, vol.246, no.6, pp.1306-1312, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 246 Issue: 6
  • Publication Date: 2009
  • Doi Number: 10.1002/pssb.200844336
  • Title of Journal : PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
  • Page Numbers: pp.1306-1312

Abstract

The absorption spectra of Ce3+, Nd3+, Eu3+, Tb3+, Er3+, Tm3+ and Yb3+ rare earth (RE) impurity ions incorporated in SrxBa1-xNb2O6 (SBN) crystals were studied in a wide spectral range from the visible to the mid-infrared. On the basis of the analysis of the Cd3+ absorption line shapes and their polarization properties the conclusion was drawn about the incorporation of multiple Ce3+ centres mostly in the position Al of the crystal lattice of SBN. From the observed temperature dependence of the Ce3+ absorption line broadening the electron coupling strength (160 cm(-1)) and effective phonon energy (300 cm(-1)) were determined. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim