TY - JOUR
T1 - Microstructure of striae in 〈0 4 ̄ 41〉 -oriented lithium niobate single crystal grown by Czochralski method
AU - Ohno, Y.
AU - Taishi, T.
AU - Bamba, N.
AU - Yonenaga, I.
PY - 2014/5/1
Y1 - 2014/5/1
N2 - In 04̄41-oriented lithium niobate single crystals, striae of planar defect lying on nearly (2̄110) were formed during the Czochralski growth. A stria was a small angle tilt boundary including a set of undissociated edge dislocations with the Burgers vector of a/3[2̄110], arranged at similar intervals of about 1μm. The dislocations extended perpendicular to the growth interface, leaving from the basal plane, presumably for the reduction of their strain energy during the growth. The formation process was discussed in terms of thermal stress at the growth interface during crystallization.
AB - In 04̄41-oriented lithium niobate single crystals, striae of planar defect lying on nearly (2̄110) were formed during the Czochralski growth. A stria was a small angle tilt boundary including a set of undissociated edge dislocations with the Burgers vector of a/3[2̄110], arranged at similar intervals of about 1μm. The dislocations extended perpendicular to the growth interface, leaving from the basal plane, presumably for the reduction of their strain energy during the growth. The formation process was discussed in terms of thermal stress at the growth interface during crystallization.
KW - A1. Line defects
KW - A1. Planar defects
KW - A2. Czochralski method
KW - B1. Lithium compounds
KW - B1. Niobates
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U2 - 10.1016/j.jcrysgro.2013.12.002
DO - 10.1016/j.jcrysgro.2013.12.002
M3 - Article
AN - SCOPUS:84897972905
VL - 393
SP - 171
EP - 174
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
ER -