Spin and orbital magnetic moments of molecular beam epitaxy γ-Fe 4N films on LaAlO3 (001) and MgO(001) substrates by x-ray magnetic circular dichroism

K. Ito, G. H. Lee, K. Harada, M. Suzuno, T. Suemasu, Y. Takeda, Y. Saitoh, M. Ye, A. Kimura, H. Akinaga

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33 Citations (Scopus)

Abstract

10-nm-thick γ-Fe4N films were grown epitaxially on LaAlO3 (001) and MgO(001) substrates by molecular beam epitaxy using solid Fe and a radio-frequency NH3 plasma. The lattice mismatch of these substrates to γ-Fe4N is 0% and 11%, respectively. Spin and orbital magnetic moments of these γ-Fe4N 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 μB and 2.47±0.06μB, respectively. These values are very close to those predicted theoretically, and distinctively larger than that for α-Fe.

Original languageEnglish
Article number102507
JournalApplied Physics Letters
Volume98
Issue number10
DOIs
Publication statusPublished - 2011 Mar 7

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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