Observation of magnetic domain structure in Fe81B 15Si4 amorphous alloy by Lorentz microscopy and electron holography

Masahiro Hiraoka; Zentaro Akase; Daisuke Shindo; Yuichi Ogawa; Yoshihito Yoshizawa

doi:10.2320/matertrans.M2009278

Observation of magnetic domain structure in Fe₈₁B ₁₅Si₄ amorphous alloy by Lorentz microscopy and electron holography

Masahiro Hiraoka, Zentaro Akase, Daisuke Shindo, Yuichi Ogawa, Yoshihito Yoshizawa

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

3 Citations (Scopus)

Abstract

Effects of heat treatment, with and without an external magnetic field, on the magnetic properties of Fe₈₁B₁₅Si₄ amorphous specimens are investigated by Lorentz microscopy and electron holography. These observations are used to clarify the details of magnetizing processes in the specimens. It is found that heat-treatment with an external magnetic field increases the magnetic anisotropy, while that without reduces the magnetic anisotropy. It is considered that this difference results from the alleviation of the strain field by heat treatment and the induced magnetic anisotropy caused by heat treatment with a magnetic held.

Original language	English
Pages (from-to)	2839-2843
Number of pages	5
Journal	Materials Transactions
Volume	50
Issue number	12
DOIs	https://doi.org/10.2320/matertrans.M2009278
Publication status	Published - 2009 Dec

Keywords

Amorphous magnetic materials
Electron holography
Heat treatment
Lorentz microscopy
Magnetic domain structure

ASJC Scopus subject areas

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

Access to Document

10.2320/matertrans.M2009278

Cite this

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abstract = "Effects of heat treatment, with and without an external magnetic field, on the magnetic properties of Fe81B15Si4 amorphous specimens are investigated by Lorentz microscopy and electron holography. These observations are used to clarify the details of magnetizing processes in the specimens. It is found that heat-treatment with an external magnetic field increases the magnetic anisotropy, while that without reduces the magnetic anisotropy. It is considered that this difference results from the alleviation of the strain field by heat treatment and the induced magnetic anisotropy caused by heat treatment with a magnetic held.",

keywords = "Amorphous magnetic materials, Electron holography, Heat treatment, Lorentz microscopy, Magnetic domain structure",

author = "Masahiro Hiraoka and Zentaro Akase and Daisuke Shindo and Yuichi Ogawa and Yoshihito Yoshizawa",

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T1 - Observation of magnetic domain structure in Fe81B 15Si4 amorphous alloy by Lorentz microscopy and electron holography

AU - Hiraoka, Masahiro

AU - Akase, Zentaro

AU - Shindo, Daisuke

AU - Ogawa, Yuichi

AU - Yoshizawa, Yoshihito

PY - 2009/12

Y1 - 2009/12

N2 - Effects of heat treatment, with and without an external magnetic field, on the magnetic properties of Fe81B15Si4 amorphous specimens are investigated by Lorentz microscopy and electron holography. These observations are used to clarify the details of magnetizing processes in the specimens. It is found that heat-treatment with an external magnetic field increases the magnetic anisotropy, while that without reduces the magnetic anisotropy. It is considered that this difference results from the alleviation of the strain field by heat treatment and the induced magnetic anisotropy caused by heat treatment with a magnetic held.

AB - Effects of heat treatment, with and without an external magnetic field, on the magnetic properties of Fe81B15Si4 amorphous specimens are investigated by Lorentz microscopy and electron holography. These observations are used to clarify the details of magnetizing processes in the specimens. It is found that heat-treatment with an external magnetic field increases the magnetic anisotropy, while that without reduces the magnetic anisotropy. It is considered that this difference results from the alleviation of the strain field by heat treatment and the induced magnetic anisotropy caused by heat treatment with a magnetic held.

KW - Amorphous magnetic materials

KW - Electron holography

KW - Heat treatment

KW - Lorentz microscopy

KW - Magnetic domain structure

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