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Three types of dissociated misfit dislocations in epitaxial Ba0.3Sr0.7TiO3 thin films grown on (001) LaAlO3

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6 Author(s)
Lu, C.J. ; Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, People’s Republic of China ; Li, Chao ; Zhang, Y.C. ; Ye, W.N.
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Three types of dissociated misfit dislocations (MDs) in epitaxial Ba0.3Sr0.7TiO3 thin films grown on (001) LaAlO3 have been studied by high-resolution transmission electron microscopy. First, a MD with b=[101] dissociates into two edge partials and results in the incline of film lattice. Second, a [110] MD is split into two (1/2)[110] partials of mixed character. In the third case, a [110] MD of mixed character is composed of three partials which are reacted with two (1/2)<110> stacking faults. Neither of the three types of dissociation reactions has been reported before for MDs in perovskite thin films.

Published in:

Journal of Applied Physics  (Volume:106 ,  Issue: 11 )

Date of Publication:

Dec 2009

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