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Structural Modification and Domain Structure in a BaTiO3 Film on (110) SrTiO3
被引:13
|作者:
Shimizu, Takao
[1
]
Suwama, Dai
[1
]
Taniguchi, Hiroki
[1
]
Taniyama, Tomoyasu
[1
]
Itoh, Mitsuru
[1
]
机构:
[1] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan
关键词:
EPITAXIAL THIN-FILMS;
ELECTRON-MICROSCOPY;
FORCE MICROSCOPY;
BIFEO3;
ARCHITECTURES;
BOUNDARY;
D O I:
10.7567/APEX.6.015803
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
An unconventional pseudo tetragonal crystal structure is demonstrated in a BaTiO3 (BTO) epitaxial thin film grown on a (110) SrTiO3 (STO) substrate by pulsed laser deposition. The crystal structure of the BTO film, one of whose principal axes is shorter than the other, is markedly different from the bulk tetragonal structure. The pseudo tetragonal structure would be caused by the nearly uniaxial strain due to the different strain relaxation along the [001] and [110] axes. An irregular 90 degrees domain structure observed by piezo response force microscopy (PFM) is understood on the basis of a possible small elastic strain at the domain boundary in the pseudo tetragonal crystal structure. (C) 2013 The Japan Society of Applied Physics
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页数:3
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