Suppressing geometric phase shift owing to antiphase boundaries in dark-field electron holography

Youngji Cho; Kodai Niitsu; Yoshihiro Midoh; Koji Nakamae; Daisuke Shindo; Jun Mo Yang; Yasukazu Murakami

doi:10.2320/matertrans.MC201809

Suppressing geometric phase shift owing to antiphase boundaries in dark-field electron holography

Youngji Cho, Kodai Niitsu, Yoshihiro Midoh, Koji Nakamae, Daisuke Shindo, Jun Mo Yang, Yasukazu Murakami

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

1 Citation (Scopus)

Abstract

Antiphase boundaries (APBs) formed in Fe₇₀Al₃₀ alloy have attracted significant attention because they intensify ferromagnetic spin order by atomic disordering. Electron holography can be a useful tool for examining the magnetism in APB regions, although the observations suffer from an undesired contribution from an additional geometric phase shift in the incident electron wave. This paper proposes a method based on dark-field electron holography to suppress the unwanted geometric phase shift owing to APBs in electron holograms. The results of this study yield useful information for examining APBs and other planar defects in ordered crystals.

Original language	English
Pages (from-to)	698-703
Number of pages	6
Journal	Materials Transactions
Volume	60
Issue number	5
DOIs	https://doi.org/10.2320/matertrans.MC201809
Publication status	Published - 2019

Keywords

Diffraction
Electron microscopy
Image processing
Magnetization
Phase shift

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.MC201809

Cite this

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title = "Suppressing geometric phase shift owing to antiphase boundaries in dark-field electron holography",

abstract = "Antiphase boundaries (APBs) formed in Fe70Al30 alloy have attracted significant attention because they intensify ferromagnetic spin order by atomic disordering. Electron holography can be a useful tool for examining the magnetism in APB regions, although the observations suffer from an undesired contribution from an additional geometric phase shift in the incident electron wave. This paper proposes a method based on dark-field electron holography to suppress the unwanted geometric phase shift owing to APBs in electron holograms. The results of this study yield useful information for examining APBs and other planar defects in ordered crystals.",

keywords = "Diffraction, Electron microscopy, Image processing, Magnetization, Phase shift",

author = "Youngji Cho and Kodai Niitsu and Yoshihiro Midoh and Koji Nakamae and Daisuke Shindo and Yang, {Jun Mo} and Yasukazu Murakami",

note = "Funding Information: The authors are grateful to Professor R. Kainuma for useful discussions about the Fe70Al30 alloy. This study was supported by JST, CREST (JPMJCR1664), and JSPS KAKENHI (JP18H03845). Publisher Copyright: {\textcopyright} 2019 The Japan Institute of Metals and Materials.",

year = "2019",

doi = "10.2320/matertrans.MC201809",

language = "English",

volume = "60",

pages = "698--703",

journal = "Materials Transactions",

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publisher = "Japan Institute of Metals (JIM)",

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T1 - Suppressing geometric phase shift owing to antiphase boundaries in dark-field electron holography

AU - Cho, Youngji

AU - Niitsu, Kodai

AU - Midoh, Yoshihiro

AU - Nakamae, Koji

AU - Shindo, Daisuke

AU - Yang, Jun Mo

AU - Murakami, Yasukazu

N1 - Funding Information: The authors are grateful to Professor R. Kainuma for useful discussions about the Fe70Al30 alloy. This study was supported by JST, CREST (JPMJCR1664), and JSPS KAKENHI (JP18H03845). Publisher Copyright: © 2019 The Japan Institute of Metals and Materials.

PY - 2019

Y1 - 2019

N2 - Antiphase boundaries (APBs) formed in Fe70Al30 alloy have attracted significant attention because they intensify ferromagnetic spin order by atomic disordering. Electron holography can be a useful tool for examining the magnetism in APB regions, although the observations suffer from an undesired contribution from an additional geometric phase shift in the incident electron wave. This paper proposes a method based on dark-field electron holography to suppress the unwanted geometric phase shift owing to APBs in electron holograms. The results of this study yield useful information for examining APBs and other planar defects in ordered crystals.

AB - Antiphase boundaries (APBs) formed in Fe70Al30 alloy have attracted significant attention because they intensify ferromagnetic spin order by atomic disordering. Electron holography can be a useful tool for examining the magnetism in APB regions, although the observations suffer from an undesired contribution from an additional geometric phase shift in the incident electron wave. This paper proposes a method based on dark-field electron holography to suppress the unwanted geometric phase shift owing to APBs in electron holograms. The results of this study yield useful information for examining APBs and other planar defects in ordered crystals.

KW - Diffraction

KW - Electron microscopy

KW - Image processing

KW - Magnetization

KW - Phase shift

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Suppressing geometric phase shift owing to antiphase boundaries in dark-field electron holography

Abstract

Keywords

ASJC Scopus subject areas

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