Inherent nanoscale bend of crystal lattice in Fe-doped calcium copper titanate

Title
Inherent nanoscale bend of crystal lattice in Fe-doped calcium copper titanate
Authors
Chung, S.Y.; Choi, S.Y.; Yamamoto, T.; Ikuhara, Y.
Keywords
HIGH-DIELECTRIC-CONSTANT, CACU3TI4O12, PEROVSKITE
Issue Date
2006-09
Publisher
AMER INST PHYSICS
Abstract
Utilizing high-resolution electron microscopy and image simulation, it is demonstrated that some of the crystal lattices of Fe-doped CaCu3Ti4O12 are intrinsically bent at the nanometer scale. A comparison between experimentally obtained and simulated images indicates that the bending angle is of a few milliradians, which is remarkable in a brittle oxide. Despite such lattice distortion, much of the lattice strain induced by the distortion appears to be released at the domain walls where a number of misfit dislocations are present.
URI
http://dspace.inha.ac.kr/handle/10505/20095
ISSN
0003-6951
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
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