Magnetic domain observation of FeCo thin films fabricated by alternate monoatomic layer deposition

T. Ohtsuki, T. Kojima, M. Kotsugi, T. Ohkochi, M. Mizuguchi, K. Takanashi

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

FeCo thin films are fabricated by alternate monoatomic layer deposition method on a Cu3Au buffer layer, which in-plane lattice constant is very close to the predicted value to obtain a large magnetic anisotropy constant. The variation of the in-plane lattice constant during the deposition process is investigated by reflection high-energy electron diffraction. The magnetic domain images are also observed by a photoelectron emission microscope in order to microscopically understand the magnetic structure. As a result, element-specific magnetic domain images show that Fe and Co magnetic moments align parallel. A series of images obtained with various azimuth reveal that the FeCo thin films show fourfold in-plane magnetic anisotropy along 〈110〉 direction, and that the magnetic domain structure is composed only of 90° wall.

Original languageEnglish
Article number043908
JournalJournal of Applied Physics
Volume115
Issue number4
DOIs
Publication statusPublished - 2014 Jan 28

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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