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Singular ring‐shaped distribution of Nd in Nd x Y 1‐x VO 4 crystals grown by floating zone method
Author(s) -
Kwon Dal Hoy,
Watauchi Satoshi,
Nagao Masanori,
Tanaka Isao
Publication year - 2010
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.201000211
Subject(s) - ring (chemistry) , distribution (mathematics) , anisotropy , quenching (fluorescence) , projection (relational algebra) , regular polygon , geometry , crystallography , materials science , mineralogy , chemistry , analytical chemistry (journal) , optics , physics , mathematics , mathematical analysis , chromatography , organic chemistry , algorithm , fluorescence
A singular ring‐shaped distribution of high Nd concentration was observed in Nd‐doped YVO 4 single crystals grown by the floating zone (FZ) method. The ring‐shaped distribution appeared 500‐1000 μm inside from the rim of the crystals. Results of growth experiments by the anisotropic heating floating zone (AHFZ) method showed that the Nd concentration was high at the high‐temperature side of the grown crystals. We found a small concave projection at a part of the convex solid‐liquid interface by quenching the molten zone during growth. The cause of the singular ring‐shaped distribution of the Nd‐rich area was discussed in relation with the concave projection at the interface and the convection in the molten zone. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)