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

Sung Yoon Chung; Si Young Choi; Takahisa Yamamoto; Yuichi Ikuhara

doi:10.1063/1.2354470

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

Sung Yoon Chung, Si Young Choi, Takahisa Yamamoto, Yuichi Ikuhara

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Utilizing high-resolution electron microscopy and image simulation, it is demonstrated that some of the crystal lattices of Fe-doped CaCu ₃Ti₄O₁₂ 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.

Original language	English
Article number	121903
Journal	Applied Physics Letters
Volume	89
Issue number	12
DOIs	https://doi.org/10.1063/1.2354470
Publication status	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2354470

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title = "Inherent nanoscale bend of crystal lattice in Fe-doped calcium copper titanate",

abstract = "Utilizing high-resolution electron microscopy and image simulation, it is demonstrated that some of the crystal lattices of Fe-doped CaCu 3Ti4O12 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.",

author = "Chung, {Sung Yoon} and Choi, {Si Young} and Takahisa Yamamoto and Yuichi Ikuhara",

note = "Funding Information: This work was supported by the Korea Research Foundation (Grant No. 2005-041-D00348). One of the authors (S.-Y.C.) was also supported by the Korea Science and Engineering Foundation (Grant No. R01-2006-000-10765-0).",

year = "2006",

doi = "10.1063/1.2354470",

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volume = "89",

journal = "Applied Physics Letters",

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T1 - Inherent nanoscale bend of crystal lattice in Fe-doped calcium copper titanate

AU - Chung, Sung Yoon

AU - Choi, Si Young

AU - Yamamoto, Takahisa

AU - Ikuhara, Yuichi

N1 - Funding Information: This work was supported by the Korea Research Foundation (Grant No. 2005-041-D00348). One of the authors (S.-Y.C.) was also supported by the Korea Science and Engineering Foundation (Grant No. R01-2006-000-10765-0).

PY - 2006

Y1 - 2006

N2 - Utilizing high-resolution electron microscopy and image simulation, it is demonstrated that some of the crystal lattices of Fe-doped CaCu 3Ti4O12 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.

AB - Utilizing high-resolution electron microscopy and image simulation, it is demonstrated that some of the crystal lattices of Fe-doped CaCu 3Ti4O12 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.

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

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