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Line width measurements of Cr3+ in a zinc borate glass

DOI: 10.1016/S0022-3093(98)00764-9
Title: Line width measurements of Cr3+ in a zinc borate glass
Journal Title: Journal of Non-Crystalline Solids
Volume: 240
Publication Date: 2 October 1998
Start Page: 232
End Page: 236
Published online: online 16 November 1998
ISSN: 0022-3093
Author: F. Rossia, M. Montagnaa, M. Ferrarib, J.A. Capobiancoa11, M. Bettinellic
Affiliations:

  • a Istituto Nazionale per la Fisica della Materia and Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38050 Povo, Italy

  • b Consiglio Nazionale delle Ricerche – CeFSA, Centro Fisica Stati Aggregati, Via Sommarive 14, I-38050 Povo, Italy

  • c Istituto Policattedra, Facoltà di Scienze MM. FF. NN., Università di Verona, Ca' Vignal, Strada Le Grazie, I-37134 Verona, Italy
  • Abstract: erature dependence of the homogeneous line width (Γh) of the R-line of Cr3+ in 4ZnO·3B2O3 glass in the region between 15 K and room temperature has been measured. We found that Γh has a T?2 dependence down to approximately 30 K. Below 30 K the data do not follow the power law, T?2. The results are compared with those of Cr3+ in mullite and ED2 silicate glasses where the crossover was observed at about 80 K and with the data for Eu3+ in zinc borate and other glasses. The comparison indicates that the local environment affects Γh. In fact, the Cr3+ ions appear to form more defined complexes with the oxygen ligands than do the Eu3+ ions, which have a larger distribution of sites in the glass.
    Received: 23 March 1998
    Revised: 11 June 1998
    Keywords: G210; O110; B140
    Corresponding information:
    Tel: +39-461 881505
    Fax: +39-461 881696; e-mail: montagna@scienceunitnit

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