Energy-loss magnetic chiral dichroism study of epitaxial MnAs film on GaAs(001)

Journal Article · Mon Aug 10 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4928542· OSTI ID:22489088

Fu, X.; Warot-Fonrose, B.; Arras, R.; Serin, V. ^[1]; Demaille, D.; Eddrief, M. ^[2]; Etgens, V. ^[2]

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1. CEMES-CNRS UPR 8011, Univ. Toulouse, F-31055 Toulouse (France)
2. Sorbonne Universités, UPMC Univ. Paris 6, UMR 7588, INSP, 4 Place Jussieu, F-75005 Paris (France)

The room-temperature ferromagnetic behavior of MnAs/GaAs(001) thin film has been locally explored by Transmission Electron Microscope (TEM). We first differentiated hexagonal α-MnAs and quasi-hexagonal β-MnAs which are very similar in atomic structure by electron diffraction. Local magnetic moment information of the identified α-MnAs was extracted from manganese-L{sub 2,3} edges using Energy-loss Magnetic Circular Dichroism technique and the ratio of orbital to spin magnetic moment was measured. In this experiment, atomic structure identification, chemical analysis, and magnetic moment measurement were simultaneously achieved at high spatial resolution in TEM, thus providing a potential method for in-situ study of local properties of multiphase magnetic materials.

• OSTI ID: 22489088
• Journal Information: Applied Physics Letters, Vol. 107, Issue 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHEMICAL ANALYSIS
CHIRALITY
ELECTRON DIFFRACTION
ENERGY LOSSES
EPITAXY
GALLIUM ARSENIDES
MAGNETIC CIRCULAR DICHROISM
MAGNETIC MATERIALS
MAGNETIC MOMENTS
MANGANESE
MANGANESE ARSENIDES
SPATIAL RESOLUTION
SPIN
TEMPERATURE RANGE 0273-0400 K
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY