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Spectroscopy of Mn4+ in orthorhombic perovskite, LaInO3

  • A. M. Srivastava*
  • , H. A. Comanzo
  • , D. J. Smith
  • , J. W. Choi
  • , M. G. Brik
  • , W. W. Beers
  • , S. A. Payne
  • *Corresponding author for this work
  • General Electric
  • Chongqing University of Posts and Telecommunications
  • University of Tartu
  • Jan Dlugosz University in Czestochowa
  • Lawrence Livermore National Laboratory

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

The low temperature spectroscopic properties of Mn4+ (3d3) in the orthorhombic perovskite, LaInO3, is examined in this work. The exchange charge model of crystal-field theory is used to calculate the Mn4+ energy levels. The spectra can be fitted by the parameters Dq = 1776 cm−1, B = 700 cm−1 and C = 3189 cm−1, with C/B = 4.5. Discussions pertaining to the low luminescence efficiency of LaInO3:Mn4+ are presented. A comparative study of the variations in the energy of the 2Eg4A2g emission transition in a series of materials with the perovskite structure is presented. The data suggest a relationship between the energy of the 2Eg4A2g emission transition and the deviation of the octahedral O-Mn-O bond angle from the ideal 90°. It is concluded that the angular distortion is not large enough to support the development of high luminosity Mn4+ activated phosphors in the ABO3 perovskite family of materials.

Original languageEnglish
Pages (from-to)398-402
Number of pages5
JournalJournal of Luminescence
Volume206
DOIs
Publication statusPublished - Feb 2019
Externally publishedYes

Keywords

  • Crystal-field theory
  • LaInO
  • Luminescence
  • Mn
  • MnO distortion
  • Perovskite

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