Pressure- and temperature-induced structural phase transitions in fluoride matrices monitoring by Eu3+ luminescence

• Published in: High pressure research Vol. 26; no. 4; pp. 411 - 414
• Main Authors: Lavín, V., Muñoz-Santiuste, J. E., Tröster, Th, Rodríguez-Mendoza, U. R., González-Platas, J., González-Silgo, C., Martín, I. R., Rivera-López, F., González-Pérez, S.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 01-12-2006
• Subjects: Crystallization; Fluoride; Luminescence; Phase transition; Pressure
• ISSN: 0895-7959; 1477-2299
• DOI: 10.1080/08957950601103932

The precipitation of micro-crystals identified as EuZrF
7
has been induced by thermal treatment in the Eu
3+
-doped fluorozirconate glass. Moreover, using luminiscence of the Eu
3+
ion, the experimental evidence of a reverse change has been obtained by a pressure-induced amorphization of the EuZrF
7
polycrystal. There is a unique kind of site in the fluorozirconate glass, in which the different environments for the Eu
3+
ions are generated by distortions of the EuZrF
7
crystalline structure.