Open AccessA STUDY OF INCLUSIONS AND DISLOCATIONS IN LiNbO3 CRYSTALS BY X-RAY TOPOGRAPHY
Author(s) -
Ge Chuan-Zheng,
S. S. Jiang,
Ming Nai-Ben,
Feng Ding
Publication year - 1987
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.36.490
Subject(s) - burgers vector , materials science , condensed matter physics , anisotropy , lattice (music) , twist , crystallography , partial dislocations , dislocation , optics , geometry , physics , mathematics , chemistry , acoustics
The inclusions and dislocations in LiNbO3 crystals have been studied by means of X-ray topography. The influence of elastic anisotropy on the contrast of inclusions was observed. The Burgers vectors of dislocations in this crystals were found to be of the type of 1/3〈1120〉, the smallest lattice vector, and 1/3〈0111〉, the next smallest lattice vector. The pure twist sub-boundary which consists of two sets of pure screw dislocations with Burgers vectors l/3〈101l〉 was also observed.