Quantitative mapping of the magnetic induction distribution using Foucault images formed in a transmission electron microscope

A. C. Daykin; A. K. Petford-Long

doi:10.1016/0304-3991(95)00008-O

Quantitative mapping of the magnetic induction distribution using Foucault images formed in a transmission electron microscope

A. C. Daykin^*, A. K. Petford-Long

^*Corresponding author for this work

Materials Science and Engineering

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

42 Scopus citations

Abstract

A method of producing quantitative maps of the magnetic induction distribution using a conventional transmission electron microscope (TEM) is presented. The magnetic induction maps are constructed from four series of Foucault images taken with small incremental tilts of the incident illumination. By reciprocity, this is equivalent to differential phase contrast (DPC) which is usually performed in a modified scanning transmission electron microscope (STEM), and whilst maintaining all the benefits of its STEM counterpart, the DPC images formed by the method presented in this paper are particularly suited to studying thick magnetic films. Unlike the other quantitative Lorentz imaging techniques, the magnetic induction maps constructed from Foucault images can be produced on a standard TEM modified with a low-field pole-piece. Images from two types of cross-tie domain wall are shown as examples which have a spatial resolution of approximately 8 nm.

Original language	English (US)
Pages (from-to)	365-380
Number of pages	16
Journal	Ultramicroscopy
Volume	58
Issue number	3-4
DOIs	https://doi.org/10.1016/0304-3991(95)00008-O
State	Published - Jun 1995

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Instrumentation

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@article{24cdc5b21c4e477ebd596774986faa9a,

title = "Quantitative mapping of the magnetic induction distribution using Foucault images formed in a transmission electron microscope",

abstract = "A method of producing quantitative maps of the magnetic induction distribution using a conventional transmission electron microscope (TEM) is presented. The magnetic induction maps are constructed from four series of Foucault images taken with small incremental tilts of the incident illumination. By reciprocity, this is equivalent to differential phase contrast (DPC) which is usually performed in a modified scanning transmission electron microscope (STEM), and whilst maintaining all the benefits of its STEM counterpart, the DPC images formed by the method presented in this paper are particularly suited to studying thick magnetic films. Unlike the other quantitative Lorentz imaging techniques, the magnetic induction maps constructed from Foucault images can be produced on a standard TEM modified with a low-field pole-piece. Images from two types of cross-tie domain wall are shown as examples which have a spatial resolution of approximately 8 nm.",

author = "Daykin, {A. C.} and Petford-Long, {A. K.}",

note = "Funding Information: The authorsw ould like to thank J.D. Kim for supplying the cobalt sample and the EPSRC (ACD) and the Royal Society (AKPL) for financial support. The images were processedw ith facilities supplied by the Materials Modelling Laboratory at the Departmento f Materials, Oxford University. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.",

year = "1995",

month = jun,

doi = "10.1016/0304-3991(95)00008-O",

language = "English (US)",

volume = "58",

pages = "365--380",

journal = "Ultramicroscopy",

issn = "0304-3991",

publisher = "Elsevier",

number = "3-4",

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TY - JOUR

T1 - Quantitative mapping of the magnetic induction distribution using Foucault images formed in a transmission electron microscope

AU - Daykin, A. C.

AU - Petford-Long, A. K.

N1 - Funding Information: The authorsw ould like to thank J.D. Kim for supplying the cobalt sample and the EPSRC (ACD) and the Royal Society (AKPL) for financial support. The images were processedw ith facilities supplied by the Materials Modelling Laboratory at the Departmento f Materials, Oxford University. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.

PY - 1995/6

Y1 - 1995/6

N2 - A method of producing quantitative maps of the magnetic induction distribution using a conventional transmission electron microscope (TEM) is presented. The magnetic induction maps are constructed from four series of Foucault images taken with small incremental tilts of the incident illumination. By reciprocity, this is equivalent to differential phase contrast (DPC) which is usually performed in a modified scanning transmission electron microscope (STEM), and whilst maintaining all the benefits of its STEM counterpart, the DPC images formed by the method presented in this paper are particularly suited to studying thick magnetic films. Unlike the other quantitative Lorentz imaging techniques, the magnetic induction maps constructed from Foucault images can be produced on a standard TEM modified with a low-field pole-piece. Images from two types of cross-tie domain wall are shown as examples which have a spatial resolution of approximately 8 nm.

AB - A method of producing quantitative maps of the magnetic induction distribution using a conventional transmission electron microscope (TEM) is presented. The magnetic induction maps are constructed from four series of Foucault images taken with small incremental tilts of the incident illumination. By reciprocity, this is equivalent to differential phase contrast (DPC) which is usually performed in a modified scanning transmission electron microscope (STEM), and whilst maintaining all the benefits of its STEM counterpart, the DPC images formed by the method presented in this paper are particularly suited to studying thick magnetic films. Unlike the other quantitative Lorentz imaging techniques, the magnetic induction maps constructed from Foucault images can be produced on a standard TEM modified with a low-field pole-piece. Images from two types of cross-tie domain wall are shown as examples which have a spatial resolution of approximately 8 nm.

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U2 - 10.1016/0304-3991(95)00008-O

DO - 10.1016/0304-3991(95)00008-O

M3 - Article

AN - SCOPUS:0029311209

VL - 58

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EP - 380

JO - Ultramicroscopy

JF - Ultramicroscopy

SN - 0304-3991

IS - 3-4

ER -

Quantitative mapping of the magnetic induction distribution using Foucault images formed in a transmission electron microscope

Abstract

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