P. Santacruz et al., PHASES IDENTIFICATION PARTIALLY CRYSTALLIZED ZRF4-LAF3-ERF3-ALF3 GLASSES, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 320(8), 1995, pp. 423-427
The photoluminescence spectra of Er3+ in partially crystallized ZrF4-L
aF3-ErF3-AlF3 glasses and in ErZr3F15 are compared exhibiting very cle
ar analogies. The X-ray powder diffraction data confirm that the cryst
allized phase which appears during the crystallization of the glass is
the trigonal La1-xErxZr3F15 one, isotopic with BiZr3F15 From the unit
cell parameters of this phase and from the Er3+ emitting levels lifet
imes a partial substitution of Er3+ for La3+ has been evidenced.