Quantitative study of magnetic field distribution by electron holography and micromagnetic simulations

被引：19

作者：

Beleggia, M ^{[1
]}

Schofield, MA

Zhu, Y

Malac, M

Liu, Z

Freeman, M

机构：

[1] Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA

[2] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 07期

关键词：

D O I：

10.1063/1.1603355

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic configuration of a submicrometer Ni88Fe12 permalloy island has been quantitatively mapped by off-axis electron holography. The two main contributions to the electron-optical phase shift, namely the phase shifts induced by the electrostatic and magnetic potentials, including fringing fields, were separated by inverting the specimen of 180degrees with respect to the electron beam and directly measuring the mean inner potential. A quantitative map of the projected magnetic induction in the sample was thereby retrieved and compared to results of micromagnetic and electromagnetic calculations, providing the minimum-energy configuration and the phase shift, respectively. (C) 2003 American Institute of Physics.

引用

页码：1435 / 1437

页数：3

共 15 条

[1] Electron-optical phase shift of magnetic nanoparticles I. Basic concepts [J].

Beleggia, M ;

Zhu, Y .

PHILOSOPHICAL MAGAZINE, 2003, 83 (08) :1045-1057

[2] A Fourier approach to fields and electron optical phase-shifts calculations [J].

Beleggia, M ;

Fazzini, PF ;

Pozzi, G .

ULTRAMICROSCOPY, 2003, 96 (01) :93-103

[3] Room temperature magnetic quantum cellular automata [J].

Cowburn, RP ;

Welland, ME .

SCIENCE, 2000, 287 (5457) :1466-1468

[4] Magnetic microscopies: the new additions [J].

Dahlberg, ED ;

Proksch, R .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :720-728

[5] Towards quantitative electron holography of magnetic thin films using in situ magnetization reversal [J].

Dunin-Borkowski, RE ;

McCartney, MR ;

Smith, DJ ;

Parkin, SSP .

ULTRAMICROSCOPY, 1998, 74 (1-2) :61-73

[6] Switching asymmetries in closely coupled magnetic nanostructure arrays [J].

Dunin-Borkowski, RE ;

McCartney, MR ;

Kardynal, B ;

Smith, DJ ;

Scheinfein, MR .

APPLIED PHYSICS LETTERS, 1999, 75 (17) :2641-2643

[7]

Egerton R. F, 1996, ELECT ENERGY LOSS SP

[8] EELS LOG-RATIO TECHNIQUE FOR SPECIMEN-THICKNESS MEASUREMENT IN THE TEM [J].

MALIS, T ;

CHENG, SC ;

EGERTON, RF .

JOURNAL OF ELECTRON MICROSCOPY TECHNIQUE, 1988, 8 (02) :193-200

[9] Off-axis electron holographic mapping of magnetic domains in Nd2Fe14B [J].

McCartney, MR ;

Zhu, YM .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) :6414-6416

[10] Quantitative imaging of magnetic domain walls in thin films using Lorentz and magnetic force microscopies [J].

McVitie, S ;

White, GS ;

Scott, J ;

Warin, P ;

Chapman, JN .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (10) :5220-5227

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