X-ray magnetic circular dichroism for CoxFe4- xN (x =0, 3, 4) films grown by molecular beam epitaxy

Keita Ito; Tatsunori Sanai; Yoko Yasutomi; Siyuan Zhu; Kaoru Toko; Yukiharu Takeda; Yuji Saitoh; Akio Kimura; Takashi Suemasu

doi:10.1063/1.4862517

X-ray magnetic circular dichroism for Co_xFe_4- _xN (x =0, 3, 4) films grown by molecular beam epitaxy

Keita Ito, Tatsunori Sanai, Yoko Yasutomi, Siyuan Zhu, Kaoru Toko, Yukiharu Takeda, Yuji Saitoh, Akio Kimura, Takashi Suemasu

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

We evaluated orbital (m_orb) and spin magnetic moments (m _spin) of Co_xFe_4-xN (x=0, 3, 4) epitaxial thin films grown by molecular beam epitaxy using x-ray magnetic circular dichroism, and discussed the dependence of these values on x. Site-averaged m_spin value of Fe atoms was deduced to be 1.91 μ_B per atom, and that of Co atoms to be 1.47 μ_B per atom in Co₃FeN at 300K. These values are close to 1.87 μ_B per Fe atom in Fe₄N and 1.43 μ_B per Co atom in Co₄N, respectively. This result implies that the Fe and Co atoms in the Co₃FeN films were located both at corner and face-centered sites in the anti-perovskite lattice. Spin magnetic moments per unit cell were decreased linearly with increasing x in Co_xFe _4-xN. This tendency is in good agreement with theory predicted by the first-principle calculation.

Original language	English
Article number	17C712
Journal	Journal of Applied Physics
Volume	115
Issue number	17
DOIs	https://doi.org/10.1063/1.4862517
Publication status	Published - 2014 May 7
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "X-ray magnetic circular dichroism for CoxFe4- xN (x =0, 3, 4) films grown by molecular beam epitaxy",

abstract = "We evaluated orbital (morb) and spin magnetic moments (m spin) of CoxFe4-xN (x=0, 3, 4) epitaxial thin films grown by molecular beam epitaxy using x-ray magnetic circular dichroism, and discussed the dependence of these values on x. Site-averaged mspin value of Fe atoms was deduced to be 1.91 μB per atom, and that of Co atoms to be 1.47 μB per atom in Co3FeN at 300K. These values are close to 1.87 μB per Fe atom in Fe4N and 1.43 μB per Co atom in Co4N, respectively. This result implies that the Fe and Co atoms in the Co3FeN films were located both at corner and face-centered sites in the anti-perovskite lattice. Spin magnetic moments per unit cell were decreased linearly with increasing x in CoxFe 4-xN. This tendency is in good agreement with theory predicted by the first-principle calculation.",

author = "Keita Ito and Tatsunori Sanai and Yoko Yasutomi and Siyuan Zhu and Kaoru Toko and Yukiharu Takeda and Yuji Saitoh and Akio Kimura and Takashi Suemasu",

year = "2014",

month = may,

day = "7",

doi = "10.1063/1.4862517",

language = "English",

volume = "115",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

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T1 - X-ray magnetic circular dichroism for CoxFe4- xN (x =0, 3, 4) films grown by molecular beam epitaxy

AU - Ito, Keita

AU - Sanai, Tatsunori

AU - Yasutomi, Yoko

AU - Zhu, Siyuan

AU - Toko, Kaoru

AU - Takeda, Yukiharu

AU - Saitoh, Yuji

AU - Kimura, Akio

AU - Suemasu, Takashi

PY - 2014/5/7

Y1 - 2014/5/7

N2 - We evaluated orbital (morb) and spin magnetic moments (m spin) of CoxFe4-xN (x=0, 3, 4) epitaxial thin films grown by molecular beam epitaxy using x-ray magnetic circular dichroism, and discussed the dependence of these values on x. Site-averaged mspin value of Fe atoms was deduced to be 1.91 μB per atom, and that of Co atoms to be 1.47 μB per atom in Co3FeN at 300K. These values are close to 1.87 μB per Fe atom in Fe4N and 1.43 μB per Co atom in Co4N, respectively. This result implies that the Fe and Co atoms in the Co3FeN films were located both at corner and face-centered sites in the anti-perovskite lattice. Spin magnetic moments per unit cell were decreased linearly with increasing x in CoxFe 4-xN. This tendency is in good agreement with theory predicted by the first-principle calculation.

AB - We evaluated orbital (morb) and spin magnetic moments (m spin) of CoxFe4-xN (x=0, 3, 4) epitaxial thin films grown by molecular beam epitaxy using x-ray magnetic circular dichroism, and discussed the dependence of these values on x. Site-averaged mspin value of Fe atoms was deduced to be 1.91 μB per atom, and that of Co atoms to be 1.47 μB per atom in Co3FeN at 300K. These values are close to 1.87 μB per Fe atom in Fe4N and 1.43 μB per Co atom in Co4N, respectively. This result implies that the Fe and Co atoms in the Co3FeN films were located both at corner and face-centered sites in the anti-perovskite lattice. Spin magnetic moments per unit cell were decreased linearly with increasing x in CoxFe 4-xN. This tendency is in good agreement with theory predicted by the first-principle calculation.

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X-ray magnetic circular dichroism for Co_xFe_4- _xN (x =0, 3, 4) films grown by molecular beam epitaxy

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