Abstract
The precipitation of micro-crystals identified as EuZrF7 has been induced by thermal treatment in the Eu3+-doped fluorozirconate glass. Moreover, using luminiscence of the Eu3+ ion, the experimental evidence of a reverse change has been obtained by a pressure-induced amorphization of the EuZrF7 polycrystal. There is a unique kind of site in the fluorozirconate glass, in which the different environments for the Eu3+ ions are generated by distortions of the EuZrF7 crystalline structure.
Acknowledgements
This work has been partially supported by ‘Ministerio de Educacíon y Ciencia’ (MAT 2004-6868). F. Rivera-López and S. González-Pérez wish to thank Cajacanarias and ULL for Ph.D. grants.