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Growth and Morphology of Nd 3+ , Er 3+ and Cr 3+ doped YAl 3 (BO 3 ) 4 Single Crystals
Author(s) -
Beregi E.,
Hartmann E.,
Malicsko L.,
Madarasz J.
Publication year - 1999
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/(sici)1521-4079(199906)34:5/6<641::aid-crat641>3.0.co;2-g
Subject(s) - nucleation , doping , crystal growth , crystallization , crystallography , diffraction , crystal (programming language) , evaporation , chemistry , crystal habit , flux method , seed crystal , morphology (biology) , lattice (music) , single crystal , materials science , mineralogy , optics , thermodynamics , geology , optoelectronics , paleontology , programming language , physics , organic chemistry , computer science , acoustics
Nd 3+ , Er 3+ and Cr 3+ doped large single crystals of YAl 3 (BO 3 ) 4 were grown by spontaneous crystallisation and by top‐seeded solution growth (TSSG) from a K 2 Mo 3 O 10 and B 2 O 3 flux. The crystals were grown in orientation with cooling rate 2.4°C/day. The small crystals grown by spontaneous nucleation usually had simple needle shape, while the large crystals grown by TSSG method had either isometrical habit or tabular one. The results suggest that the extremely large pinacoid faces appearing in the case of YAB:Cr 3+ growth are due to a high temperature gradient in the flux, and evaporation of the solution. The lattice structure of crystals checked by powder X‐ray diffraction is isomorphous to YAB with space group R32. The dependence of crystal habits and growth conditions is discussed.