Author/Authors :
Solarz، نويسنده , , P. and Pietraszko، نويسنده , , A. and Dominiak-Dzik، نويسنده , , G. and Ryba-Romanowski، نويسنده , , W.، نويسنده ,
Abstract :
New fluoride compound Na2K2NdF7 has been synthesised and obtained in the single crystal form by the Bridgman method. The crystal is cubic, space group Im 3 ¯ m , with lattice parameters a = 1.28283 (15) nm. In this structure Nd3+ ions reside in sites with C4v symmetry. Judd–Ofelt analysis of optical absorption spectra revealed that radiative lifetime of the 4F3/2 level of Nd3+ equals to 460 μs. Measured lifetime is 2.8 μs for Na2K2NdF7 and 439 μs for Na2K2La0.99Nd0.01F7, in agreement with the calculated value.
