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Morphology of BBO Crystals and their Inclusions
Author(s) -
Zhong W. Z.,
Hong H. C.,
Lu Z. P.,
Zhao T. D.,
Hua S. K.,
Tang D. Y.,
Zhao Q. L.,
Zeng W. R.,
Lin X.
Publication year - 1993
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.2170280618
Subject(s) - morphology (biology) , crystal (programming language) , crystallography , symmetry (geometry) , materials science , polarity (international relations) , chemistry , geometry , mathematics , geology , paleontology , biochemistry , computer science , cell , programming language
This paper reports on the morphology and inclusions in the low temperature phase barium metaborate BaB 2 O 4 (BBO) crystal grown by an improved flux pulling method. The morphology of ideal BBO crystals and the relationship between the faces and the growth rate are given. The result that BBO has the symmetry L 3 3P and belongs to the space group C 3v −3m can therefore be concluded. It is found that the polarity of the BBO crystal along the Z (or c ) axis has a visible influence on the morphology. The investigation of the inclusions in BBO crystals shows that these have a six‐fold symmetry which corresponds to the extension of flute‐like facets. It is also found that most of the inclusions have a regular geometric figure and can be regarded as the negative‐crystal structure which is due to the internal growth mechanism.