Structural and optical properties of Nd3+ doped columbite SrNb2O6


EKMEKÇİ M. K. , ERDEM M. , BAŞAK A. S. , DANIŞ Ö.

OPTIK, vol.127, no.8, pp.4123-4126, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 127 Issue: 8
  • Publication Date: 2016
  • Doi Number: 10.1016/j.ijleo.2016.01.107
  • Title of Journal : OPTIK
  • Page Numbers: pp.4123-4126
  • Keywords: Columbite niobates, Molten salt synthesis, Luminescence, MICROWAVE DIELECTRIC-PROPERTIES, NONSTOICHIOMETRY

Abstract

Nd-doped SrNb2O6 particles have been prepared by a molten salt method using strontium nitrate, niobium oxide and NaCl-KCl salt mixture as a flux at a relatively low temperature as compared to solid-state reaction method. X-ray diffraction patterns of the pure SrNb2O6 samples exhibited a single orthorhombic phase. Photoluminescence (PL) properties of Nd-doped samples in near-infrared spectral region were studied in detail. A characteristic luminescence of Nd3+ at 1.06 mu m was observed for Nd-doped SrNb2O6. Concentration quenching phenomenon was detected depending on the Nd-doping concentrations at room temperature. This characteristic of the doped samples may be ascribed to the energy transfer between Nd3+ and niobate groups (NbO6). (C) 2016 Elsevier GmbH. All rights reserved.