Chemical shift of the nitrogen electrons in Fe16N2(001) single crystal films epitaxially grown by molecular beam epitaxy

H. Takahashi; M. Igarashi; A. Sakuma; Y. Sugita

doi:10.1109/20.908628

Chemical shift of the nitrogen electrons in Fe₁₆N₂(001) single crystal films epitaxially grown by molecular beam epitaxy

H. Takahashi, M. Igarashi, A. Sakuma, Y. Sugita

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

The spectra of X-ray photoelectron spectroscopy (XPS) were measured for Fe₁₆N₂(001) single crystal films epitaxially grown by molecular beam epitaxy (MBE). It was found that the binding energy of N-1s (E_N1S) of Fe₁₆N₂ is lower than that of Fe₄N, indicating that the energy level of N-1s electron in Fe₁₆N₂ is higher due to the larger value of the electron-electron Coulomb energy within N atom. From this result, it is expected that more electrons transfer from N atoms to N atoms in Fe₁₆N₂ than in Fe₄ N. It is likely that the N atoms in Fe₁₆N₂ act as electron acceptors and this can lead to the nearly full spin polarization in each Fe atoms with a ferromagnetic coupling due to electron hopping.

Original language	English
Pages (from-to)	2921-2923
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	36
Issue number	5 I
DOIs	https://doi.org/10.1109/20.908628
Publication status	Published - 2000 Sep
Externally published	Yes
Event	2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada Duration: 2000 Apr 9 → 2000 Apr 12

Keywords

Binding energy
Chemical shift
Fe-N martensite
FeN
FeN
N concentration
Saturation magnetization
X-ray photoelectron spectroscopy

ASJC Scopus subject areas

Electrical and Electronic Engineering
Physics and Astronomy (miscellaneous)

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@article{0a895ac5e3b54920acae18d4e881cce6,

title = "Chemical shift of the nitrogen electrons in Fe16N2(001) single crystal films epitaxially grown by molecular beam epitaxy",

abstract = "The spectra of X-ray photoelectron spectroscopy (XPS) were measured for Fe16N2(001) single crystal films epitaxially grown by molecular beam epitaxy (MBE). It was found that the binding energy of N-1s (EN1S) of Fe16N2 is lower than that of Fe4N, indicating that the energy level of N-1s electron in Fe16N2 is higher due to the larger value of the electron-electron Coulomb energy within N atom. From this result, it is expected that more electrons transfer from N atoms to N atoms in Fe16N2 than in Fe4 N. It is likely that the N atoms in Fe16N2 act as electron acceptors and this can lead to the nearly full spin polarization in each Fe atoms with a ferromagnetic coupling due to electron hopping.",

keywords = "Binding energy, Chemical shift, Fe-N martensite, FeN, FeN, N concentration, Saturation magnetization, X-ray photoelectron spectroscopy",

author = "H. Takahashi and M. Igarashi and A. Sakuma and Y. Sugita",

note = "Funding Information: Manuscript received February 15, 2000; revised May 15, 2000. This work was supported in part by ASET of NEDO, and by SRC. H. Takahashi and M. Igarashi are with the Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan (e-mail: h-takaha@crl.hi-tachi.co.jp). A. Sakuma is with the Magnetic and Electric Materials Research Laboratory, Hitachi Metals, Ltd., Kumagaya, Saitama 360-0843, Japan. Y. Sugita was with the Research Institute of Electrical Communication, To-hoku University, Aoba-ku, Sendai 980-8577, Japan. He is now with the Tohoku Institute of Technology, 35-1 Yagiyama Kasumi Taihaku-ku, Sendai 982-8577, Japan (e-mail: ysugita@titan.tohtech.ac.jp). Publisher Item Identifier S 0018-9464(00)08111-5. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; 2000 International Magnetics Conference (INTERMAG 2000) ; Conference date: 09-04-2000 Through 12-04-2000",

year = "2000",

month = sep,

doi = "10.1109/20.908628",

language = "English",

volume = "36",

pages = "2921--2923",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "5 I",

}

TY - JOUR

T1 - Chemical shift of the nitrogen electrons in Fe16N2(001) single crystal films epitaxially grown by molecular beam epitaxy

AU - Takahashi, H.

AU - Igarashi, M.

AU - Sakuma, A.

AU - Sugita, Y.

N1 - Funding Information: Manuscript received February 15, 2000; revised May 15, 2000. This work was supported in part by ASET of NEDO, and by SRC. H. Takahashi and M. Igarashi are with the Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan (e-mail: h-takaha@crl.hi-tachi.co.jp). A. Sakuma is with the Magnetic and Electric Materials Research Laboratory, Hitachi Metals, Ltd., Kumagaya, Saitama 360-0843, Japan. Y. Sugita was with the Research Institute of Electrical Communication, To-hoku University, Aoba-ku, Sendai 980-8577, Japan. He is now with the Tohoku Institute of Technology, 35-1 Yagiyama Kasumi Taihaku-ku, Sendai 982-8577, Japan (e-mail: ysugita@titan.tohtech.ac.jp). Publisher Item Identifier S 0018-9464(00)08111-5. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2000/9

Y1 - 2000/9

N2 - The spectra of X-ray photoelectron spectroscopy (XPS) were measured for Fe16N2(001) single crystal films epitaxially grown by molecular beam epitaxy (MBE). It was found that the binding energy of N-1s (EN1S) of Fe16N2 is lower than that of Fe4N, indicating that the energy level of N-1s electron in Fe16N2 is higher due to the larger value of the electron-electron Coulomb energy within N atom. From this result, it is expected that more electrons transfer from N atoms to N atoms in Fe16N2 than in Fe4 N. It is likely that the N atoms in Fe16N2 act as electron acceptors and this can lead to the nearly full spin polarization in each Fe atoms with a ferromagnetic coupling due to electron hopping.

AB - The spectra of X-ray photoelectron spectroscopy (XPS) were measured for Fe16N2(001) single crystal films epitaxially grown by molecular beam epitaxy (MBE). It was found that the binding energy of N-1s (EN1S) of Fe16N2 is lower than that of Fe4N, indicating that the energy level of N-1s electron in Fe16N2 is higher due to the larger value of the electron-electron Coulomb energy within N atom. From this result, it is expected that more electrons transfer from N atoms to N atoms in Fe16N2 than in Fe4 N. It is likely that the N atoms in Fe16N2 act as electron acceptors and this can lead to the nearly full spin polarization in each Fe atoms with a ferromagnetic coupling due to electron hopping.

KW - Binding energy

KW - Chemical shift

KW - Fe-N martensite

KW - FeN

KW - N concentration

KW - Saturation magnetization

KW - X-ray photoelectron spectroscopy

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U2 - 10.1109/20.908628

DO - 10.1109/20.908628

M3 - Conference article

AN - SCOPUS:0034260495

VL - 36

SP - 2921

EP - 2923

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 5 I

T2 - 2000 International Magnetics Conference (INTERMAG 2000)

Y2 - 9 April 2000 through 12 April 2000

ER -