Czochralski growth and characterization of Dy: La₃Ga_5.5Nb_0.5O₁₄ single crystals

Abstract

Dysprosium (Dy) doped La 3 Ga 5.5 Nb 0.5 O 14 single crystals were grown by the traditional Czochralski method along z-axis. The structure of the crystal has been studied by X-ray powder diffraction method, and the unitcell parameters are calculated to be a=8.22070 Å, c=5.12533 Å and V=299.965 Å 3 . The segregation coefficient of Dy 3+ in La 3 Ga 5.5 Nb 0.5 O 14 crystal was measured by X-ray fluorescence analysis. For 1 mol% doping level in the melt, the distribution coefficient of Dy 3+ was determined to be 0.341 wt%. Specific heat, thermal expansion and transmission spectrum of Dy: La 3 Ga 5.5 Nb 0.5 O 14 single crystals have been measured. The fluorescence spectra of Dy

Effect of dysprosium active ions on spectral properties of KGW single crystals

“…Though, fluorides were considered in the early stages, but they have several growth difficulties compared to oxides. Oxides have been investigated recently to understand the spectroscopic properties of Dy 3+ ions in the matrix [4][5][6].…”