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

Marco Beleggia, M. A. Schofield, Y. Zhu, M. Malac, Z. Liu, M. Freeman

Research output: Contribution to journalJournal articlepeer-review

Abstract

The magnetic configuration of a submicrometer Ni88Fe12permalloyisland 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 180° 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.
© 2003 American Institute of Physics
Original languageEnglish
JournalApplied Physics Letters
Volume83
Issue number7
Pages (from-to)1435-1437
Number of pages3
ISSN0003-6951
DOIs
Publication statusPublished - 2003
Externally publishedYes

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