Anion coordination environments around cations in chlorofluoroaluminate and chlorofluorocadmate glasses containing Eu3+

The present work explores the characteristics of rare-earth ions-containing chlorofluoride glasses, in which the anion-coordination environments aroun d rare-earth ions are changeable by the substitution of Cl for F. In this s tudy, chlorofluoroaluminate and chlorofluorocadmate glasses with substituti ons of Cl for F were developed, whose compositions are 40AlF(3).(20 - x)BaF 2. xBaCl(2). 20CaF(2). 17YF(3). 3EuF(3) in mol% (x = 0, 3, 6, 9 and 12) and 50CdF(2).(20 - x) BaF2. xBaCl(2). 30NaCl + 0.1EuF(3) in molar ratio (x = 0 , 5, 10, 15 and 20), respectively. Changes in the anion coordination around cations with the Cl substitution were examined by molecular dynamics simul ation and Eu3+ fluorescence spectroscopy. The experimental results revealed that the chlorofluoroaluminate glasses satisfy the present research object , while the chlorofluorocadmate glasses exert no effect on controlling the anion-coordination environments around rare-earth ions.