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Observation of Magnetic Multilayers by Electron Holography

Published online by Cambridge University Press:  22 January 2004

T. Tanji ,
S. Hasebe ,
Y. Nakagami ,
K. Yamamoto  and
M. Ichihashi
T. Tanji
Affiliation:
Department of Electronics, Nagoya University, Nagoya 464-8603, Japan
S. Hasebe
Affiliation:
Department of Electronics, Nagoya University, Nagoya 464-8603, Japan
Y. Nakagami
Affiliation:
Department of Electronics, Nagoya University, Nagoya 464-8603, Japan
K. Yamamoto
Affiliation:
Japan Science and Technology Corporation, c/o Japan Fine Ceramics Center, Nagoya 465-8587, Japan
M. Ichihashi
Affiliation:
Center for Integrated Research in Science and Engineering, Nagoya University, Nagoya 464-8603, Japan
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Abstract

Magnetic structures of Co/Cu multilayers in cross section are observed by two kinds of electron holography: a Fourier method and a phase-shifting method, which is introduced briefly. The Fourier method can easily reconstruct wave functions and is applied to many specimens, whereas the phase-shifting method requires longer time for processing, but has a higher spatial resolution that permits us to discuss fine structures. Magnetization vectors in Co layers aligning parallel and separating into two blocks with antiparallel alignment are observed. Magnetic blurring on the boundary between Co and Cu in the reconstructed phase images is larger than the estimated atomic roughness.

Keywords

multilayerelectron holographyphase-shifting methodCo/Cu
Type
Research Article
Information
Microscopy and Microanalysis , Volume 10 , Issue 1 , February 2004 , pp. 146 - 152
Copyright
© 2004 Microscopy Society of America

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References

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