Spin and orbital magnetic moments of molecular beam epitaxy {gamma}{sup '}-Fe{sub 4}N films on LaAlO{sub 3}(001) and MgO(001) substrates by x-ray magnetic circular dichroism

Journal Article · Mon Mar 07 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3564887· OSTI ID:21518313

Ito, K; Lee, G H; Harada, K; Suzuno, M; Suemasu, T ^[1]; Takeda, Y; Saitoh, Y ^[2]; Ye, M; Kimura, A ^[3]; Akinaga, H ^[4]

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1. Institute of Applied Physics, University of Tsukuba, Ibaraki 305-8573 (Japan)
2. Japan Atomic Energy Agency, SPring-8, Hyogo 679-5198 (Japan)
3. Graduate School of Science, Hiroshima University, Hiroshima 739-8526 (Japan)
4. National Institute of Advanced Industrial Science and Technology, Ibaraki 305-8568 (Japan)

10-nm-thick {gamma}{sup '}-Fe{sub 4}N films were grown epitaxially on LaAlO{sub 3}(001) and MgO(001) substrates by molecular beam epitaxy using solid Fe and a radio-frequency NH{sub 3} plasma. The lattice mismatch of these substrates to {gamma}{sup '}-Fe{sub 4}N is 0% and 11%, respectively. Spin and orbital magnetic moments of these {gamma}{sup '}-Fe{sub 4}N epitaxial films were deduced by x-ray magnetic circular dichroism measurements at 300 K. The total magnetic moments are almost the same for the two substrates, that is, 2.44{+-}0.06 {mu}{sub B} and 2.47{+-}0.06 {mu}{sub B}, respectively. These values are very close to those predicted theoretically, and distinctively larger than that for {alpha}-Fe.

• OSTI ID: 21518313
• Journal Information: Applied Physics Letters, Vol. 98, Issue 10; Other Information: DOI: 10.1063/1.3564887; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINATES
AMMONIA
CRYSTAL DEFECTS
FERROMAGNETIC MATERIALS
FILMS
IRON NITRIDES
IRON-ALPHA
IRON-GAMMA
LANTHANUM COMPOUNDS
LAYERS
MAGNESIUM OXIDES
MAGNETIC CIRCULAR DICHROISM
MAGNETIC MOMENTS
MOLECULAR BEAM EPITAXY
RADIOWAVE RADIATION
SOLIDS
SPIN
SUBSTRATES
X RADIATION
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ANGULAR MOMENTUM
CHALCOGENIDES
CRYSTAL GROWTH METHODS
CRYSTAL STRUCTURE
DICHROISM
ELECTROMAGNETIC RADIATION
ELEMENTS
EPITAXY
HYDRIDES
HYDROGEN COMPOUNDS
IONIZING RADIATIONS
IRON
IRON COMPOUNDS
MAGNESIUM COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
METALS
NITRIDES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
PNICTIDES
RADIATIONS
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS