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Il Nuovo Cimento D

, Volume 15, Issue 1, pp 9–16 | Cite as

Temperature dependence of the MnPS3 crystal fluorescence

  • V. Grasso
  • F. Neri
  • P. Perillo
  • L. Silipigni
Article

Summary

The fluorescence spectra of MnPS3 single crystals have been investigated at various temperatures beginning from 300K down to 10K in the 1.5 eV to 3.0 eV range. Four structures are observed in all spectra. The strong similarity between these results and previous data concerning the MnPS3 room temperature fluorescence suggests an intra-Mn nature for the transitions responsible for the above features. All the subband gap structures exhibit a temperature shift which can be satisfactorily interpreted by means of the crystal field theory and the so-called «transition metal weakly interacting» model. The fine splitting in the originally degenerate {4 E g,4 A 1g} levels is enhanced as temperature decreases. These results confirm the Mn2+ 3ϕ excited-state energy distribution deduced from the transition metal weakly interacting model.

PACS 78.55.Et

II-VI compounds and other chalcogenides 

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References

  1. [1]
    W. Klingen, R. Ott andH. Hahn:Z. Anorg. Allg. Chem.,396, 271 (1973).CrossRefGoogle Scholar
  2. [2]
    V. Grasso et al.:Phys. Rev. B,40, 5529 (1989).CrossRefADSGoogle Scholar
  3. [3]
    M. Piacentini, F. S. Khumalo, C. G. Olson, J. W. Anderegg andD. W. Lynch:Chem. Phys.,65, 289 (1982).CrossRefGoogle Scholar
  4. [4]
    H. Eyring (Editor):Physical Chemistry; an Advanced Treatise (Academic, New York, NY, 1970), Vol. V, Chapt. V.Google Scholar
  5. [5]
    C. J. Ballhausen:Introduction to Ligand Field Theory, McGraw-Hill Series in Advanced Chemistry (McGraw-Hill, New York, NY, 1962).Google Scholar
  6. [6]
    H. Bethe:Ann. Phys. (Leipzig),3, 133 (1929).MATHADSGoogle Scholar
  7. [7]
    S. Koide andM. H. L. Pryce:Philos. Mag.,3, 607 (1958).CrossRefADSGoogle Scholar
  8. [8]
    L. E. Orgel:J. Chem. Phys.,23, 1004 (1955).CrossRefADSGoogle Scholar
  9. [9]
    V. Grasso, S. Santangelo andM. Piacentini:Solid State Ionics,20, 9 (1986).CrossRefGoogle Scholar
  10. [10]
    R. Brec, G. Ouvrard, A. Louisy andJ. Rouxel:Ann. Chim. (Paris),6, 499 (1980).Google Scholar
  11. [11]
    L. E. Orgel:J. Chem. Phys.,23, 1824 (1955).CrossRefADSGoogle Scholar
  12. [12]
    B. Di Bartolo:Optical Interactions in Solids (John Wiley & Sons, Inc., New York NY, 1986), Chap. 17.Google Scholar
  13. [13]
    I. Pollini, G. Spinolo andG. Benedek:Phys. Rev. B,22, 6369 (1980).CrossRefADSGoogle Scholar
  14. [14]
    J. W. Stout:J. Chem. Phys.,33, 303 (1960).CrossRefADSGoogle Scholar
  15. [15]
    V. Grasso et al.:Phys. Rev. B,44, 11060 (1991).CrossRefADSGoogle Scholar
  16. [16]
    H. J. W. M. Hoekstra:Physica (Utrecht) B,121, 62 (1983).Google Scholar

Copyright information

© Società Italiana di Fisica 1993

Authors and Affiliations

  • V. Grasso
    • 1
  • F. Neri
    • 1
  • P. Perillo
    • 1
  • L. Silipigni
    • 1
  1. 1.Istituto di Struttura della MateriaUniversità di MessinaMessinaItalia

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