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Czochralski growth of Lu 1‐x Sc x BO 3 :Ce solid solution crystals
Author(s) -
Wu Y. T.,
Ding D. Z.,
Pan S. K.,
Yang F.,
Ren G. H.
Publication year - 2011
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000481
Subject(s) - solid solution , luminescence , analytical chemistry (journal) , crystallography , cerium , lattice constant , crystal (programming language) , crystal structure , materials science , single crystal , lutetium , oxide , chemistry , diffraction , yttrium , inorganic chemistry , physics , optoelectronics , chromatography , computer science , optics , metallurgy , programming language
Abstract Single crystals of Lu 1‐x Sc x BO 3 :Ce (x=0.2, 0.3, 0.5, 0.7) were grown by Czochralski method. Continuous solid solution with calcite structure and a linear compositional dependency of crystal lattice parameter in the system Lu 1‐x Sc x BO 3 :Ce are formed and their symmetry belong to hexagonal system with R3c space group checked by X‐ray powder diffraction. The electron probe micro‐analysis measurements show that the main inclusions in Lu 1‐x Sc x BO 3 :Ce crystals are in the form of Sc rich oxide and Ce rich oxide. The ICP‐AES tests show that the more Sc ion content in Lu 1‐x Sc x BO 3 :Ce, the smaller effective segregation coefficient of Ce in crystal will be. The X‐ray excited luminescence spectra of Lu 1‐x Sc x BO 3 :Ce crystals all present a double peaked emission band with maxima round 370 and 400 nm corresponding to Ce 3+ emission and a self trapped excitons (STE) band peaking at 269 nm. In addition, due to high density, high relative light yield, fast decay time and no‐hygroscopic property, Lu 0.8 Sc 0.2 BO 3 :1 at%Ce crystal could be a good candidate material for scintillation application by improving the crystal quality and cerium concentration. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)