Electron holography study of remanence states in exchange-biased MnPd/Fe bilayers grown epitaxially on MgO(001)

Jong Seok Jeong; Zentaro Akase; Daisuke Shindo; Qing Feng Zhan; Kannan M. Krishnan

doi:10.1093/jmicro/dfr015

Electron holography study of remanence states in exchange-biased MnPd/Fe bilayers grown epitaxially on MgO(001)

Jong Seok Jeong
, Zentaro Akase
, Daisuke Shindo
, Qing Feng Zhan
, Kannan M. Krishnan

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

2 Scopus citations

Abstract

We investigated magnetic remanence states of epitaxially grown, exchange-biased MnPd/Fe bilayers by electron holography emphasizing the crystallographic orientations of the layers. Thin-foil transmission electron microscopy (TEM) specimens were carefully prepared along both hard and easy axes of the Fe layer. The ex situ magnetization-reversal process was carried out using the TEM specimens, and magnetic flux densities of the ultra-thin Fe layers were evaluated at different remanence states. We show that a spin configuration in the TEM specimens is determined by the competition between an exchange coupling at the MnPd/Fe bilayer interface, shape anisotropy of TEM specimens and intrinsic magnetocrystalline anisotropy of Fe.

Original language	English
Pages (from-to)	235-242
Number of pages	8
Journal	Journal of Electron Microscopy
Volume	60
Issue number	3
DOIs	https://doi.org/10.1093/jmicro/dfr015
State	Published - Jun 2011
Externally published	Yes

Keywords

TEM
demagnetizing effects
electron holography
exchange bias
magnetic flux density
shape anisotropy

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10.1093/jmicro/dfr015

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title = "Electron holography study of remanence states in exchange-biased MnPd/Fe bilayers grown epitaxially on MgO(001)",

abstract = "We investigated magnetic remanence states of epitaxially grown, exchange-biased MnPd/Fe bilayers by electron holography emphasizing the crystallographic orientations of the layers. Thin-foil transmission electron microscopy (TEM) specimens were carefully prepared along both hard and easy axes of the Fe layer. The ex situ magnetization-reversal process was carried out using the TEM specimens, and magnetic flux densities of the ultra-thin Fe layers were evaluated at different remanence states. We show that a spin configuration in the TEM specimens is determined by the competition between an exchange coupling at the MnPd/Fe bilayer interface, shape anisotropy of TEM specimens and intrinsic magnetocrystalline anisotropy of Fe.",

keywords = "TEM, demagnetizing effects, electron holography, exchange bias, magnetic flux density, shape anisotropy",

author = "Jeong, \{Jong Seok\} and Zentaro Akase and Daisuke Shindo and Zhan, \{Qing Feng\} and Krishnan, \{Kannan M.\}",

year = "2011",

month = jun,

doi = "10.1093/jmicro/dfr015",

language = "英语",

volume = "60",

pages = "235--242",

journal = "Journal of Electron Microscopy",

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publisher = "Oxford University Press",

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T1 - Electron holography study of remanence states in exchange-biased MnPd/Fe bilayers grown epitaxially on MgO(001)

AU - Jeong, Jong Seok

AU - Akase, Zentaro

AU - Shindo, Daisuke

AU - Zhan, Qing Feng

AU - Krishnan, Kannan M.

PY - 2011/6

Y1 - 2011/6

N2 - We investigated magnetic remanence states of epitaxially grown, exchange-biased MnPd/Fe bilayers by electron holography emphasizing the crystallographic orientations of the layers. Thin-foil transmission electron microscopy (TEM) specimens were carefully prepared along both hard and easy axes of the Fe layer. The ex situ magnetization-reversal process was carried out using the TEM specimens, and magnetic flux densities of the ultra-thin Fe layers were evaluated at different remanence states. We show that a spin configuration in the TEM specimens is determined by the competition between an exchange coupling at the MnPd/Fe bilayer interface, shape anisotropy of TEM specimens and intrinsic magnetocrystalline anisotropy of Fe.

AB - We investigated magnetic remanence states of epitaxially grown, exchange-biased MnPd/Fe bilayers by electron holography emphasizing the crystallographic orientations of the layers. Thin-foil transmission electron microscopy (TEM) specimens were carefully prepared along both hard and easy axes of the Fe layer. The ex situ magnetization-reversal process was carried out using the TEM specimens, and magnetic flux densities of the ultra-thin Fe layers were evaluated at different remanence states. We show that a spin configuration in the TEM specimens is determined by the competition between an exchange coupling at the MnPd/Fe bilayer interface, shape anisotropy of TEM specimens and intrinsic magnetocrystalline anisotropy of Fe.

KW - TEM

KW - demagnetizing effects

KW - electron holography

KW - exchange bias

KW - magnetic flux density

KW - shape anisotropy

UR - https://www.scopus.com/pages/publications/79958858353

U2 - 10.1093/jmicro/dfr015

DO - 10.1093/jmicro/dfr015

M3 - 文章

C2 - 21474493

AN - SCOPUS:79958858353

SN - 0022-0744

VL - 60

SP - 235

EP - 242

JO - Journal of Electron Microscopy

JF - Journal of Electron Microscopy

IS - 3

ER -

Electron holography study of remanence states in exchange-biased MnPd/Fe bilayers grown epitaxially on MgO(001)

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Keywords

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