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Twin structure in Yb:YAl 3 (BO 3 ) 4 crystal
Author(s) -
Zhao Shanrong,
Wang Jiyang,
Sun Daliang,
Hu Xiaobo,
Liu Hong
Publication year - 2001
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889801010834
Subject(s) - crystal twinning , crystallography , bar (unit) , materials science , crystal structure , macle , plane (geometry) , orientation (vector space) , crystal (programming language) , geometry , chemistry , physics , microstructure , mathematics , meteorology , computer science , programming language
Twin structure is a defect in the self‐frequency‐doubling laser crystal material Yb:YAl 3 (BO 3 ) 4 (YbYAB). Based on atomic force microscopy (AFM) observations, a check‐like twin structure in YbYAB crystals is found. This kind of twin structure has three twin composition planes: (101), (011) and (101). These three twin composition planes result in a series of twin boundaries in two directions, forming a check‐like pattern on each face. From the orientation of the chemical etching pits on each side of the twin boundary, it is found that the twin element is `twin plane ⊥ y axis', alternatively indicated as `twin plane {110}'. The two single crystals composing the twin are a right form and a left form. This kind of twin is similar to the Brazil twin found in quartz.