Spin dependent EXAFS in DyFe2

T. Nakamura; M. Mizumaki; Y. Watanabe; H. Kimura; K. Higashi; M. Yoshimi; S. Nanao

doi:10.1051/jp4/1997035

Spin dependent EXAFS in DyFe₂

T. Nakamura, M. Mizumaki, Y. Watanabe, H. Kimura, K. Higashi, M. Yoshimi, S. Nanao

International Center for Synchrotron Radiation Innovation Smart (SRIS)

The University of Tokyo

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

Abstract

The SPEXAFS in DyFe₂ powder at the Fe K-edge was measured at 20 K and a high quality spectrum was obtained. The DyFe₂ alloy has a crystalline structure of a C15 Laves phase and the spin moments of Fe ferrimagnetically couple with those of Dy. The pair distributions reflecting the sign of spin moments were derived for the first time by calculating the F(r) profile as the difference between the absolute value of Fourier transformed ^k3X₊^(k) and ^k3X_-^(k). In F(r), a negative peak and positive one were obtained at the position of Fe- (2.37 Å) and Dy- (2.97 Å) shells, respectively. The results confirm the validity of the present analytical method to obtain the pair distributions with the sign of spin moments. It extends the usefulness of SPEXAFS as a tool to study magnetic structures.

Original language	English
Pages (from-to)	C2-425-C2-426
Journal	Journal De Physique. IV : JP
Volume	7
Issue number	2 Part 1
DOIs	https://doi.org/10.1051/jp4/1997035
Publication status	Published - 1997

Access to Document

10.1051/jp4/1997035

Cite this

@article{f28440f7ae39416286eba9fe6477bfe3,

title = "Spin dependent EXAFS in DyFe2",

abstract = "The SPEXAFS in DyFe2 powder at the Fe K-edge was measured at 20 K and a high quality spectrum was obtained. The DyFe2 alloy has a crystalline structure of a C15 Laves phase and the spin moments of Fe ferrimagnetically couple with those of Dy. The pair distributions reflecting the sign of spin moments were derived for the first time by calculating the F(r) profile as the difference between the absolute value of Fourier transformed k3X+(k) and k3X-(k). In F(r), a negative peak and positive one were obtained at the position of Fe- (2.37 {\AA}) and Dy- (2.97 {\AA}) shells, respectively. The results confirm the validity of the present analytical method to obtain the pair distributions with the sign of spin moments. It extends the usefulness of SPEXAFS as a tool to study magnetic structures.",

author = "T. Nakamura and M. Mizumaki and Y. Watanabe and H. Kimura and K. Higashi and M. Yoshimi and S. Nanao",

year = "1997",

doi = "10.1051/jp4/1997035",

language = "English",

volume = "7",

pages = "C2--425--C2--426",

journal = "Journal De Physique. IV : JP",

issn = "1155-4339",

publisher = "Springer Verlag",

number = "2 Part 1",

}

TY - JOUR

T1 - Spin dependent EXAFS in DyFe2

AU - Nakamura, T.

AU - Mizumaki, M.

AU - Watanabe, Y.

AU - Kimura, H.

AU - Higashi, K.

AU - Yoshimi, M.

AU - Nanao, S.

PY - 1997

Y1 - 1997

N2 - The SPEXAFS in DyFe2 powder at the Fe K-edge was measured at 20 K and a high quality spectrum was obtained. The DyFe2 alloy has a crystalline structure of a C15 Laves phase and the spin moments of Fe ferrimagnetically couple with those of Dy. The pair distributions reflecting the sign of spin moments were derived for the first time by calculating the F(r) profile as the difference between the absolute value of Fourier transformed k3X+(k) and k3X-(k). In F(r), a negative peak and positive one were obtained at the position of Fe- (2.37 Å) and Dy- (2.97 Å) shells, respectively. The results confirm the validity of the present analytical method to obtain the pair distributions with the sign of spin moments. It extends the usefulness of SPEXAFS as a tool to study magnetic structures.

AB - The SPEXAFS in DyFe2 powder at the Fe K-edge was measured at 20 K and a high quality spectrum was obtained. The DyFe2 alloy has a crystalline structure of a C15 Laves phase and the spin moments of Fe ferrimagnetically couple with those of Dy. The pair distributions reflecting the sign of spin moments were derived for the first time by calculating the F(r) profile as the difference between the absolute value of Fourier transformed k3X+(k) and k3X-(k). In F(r), a negative peak and positive one were obtained at the position of Fe- (2.37 Å) and Dy- (2.97 Å) shells, respectively. The results confirm the validity of the present analytical method to obtain the pair distributions with the sign of spin moments. It extends the usefulness of SPEXAFS as a tool to study magnetic structures.

UR - http://www.scopus.com/inward/record.url?scp=4143145380&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4143145380&partnerID=8YFLogxK

U2 - 10.1051/jp4/1997035

DO - 10.1051/jp4/1997035

M3 - Article

AN - SCOPUS:4143145380

SN - 1155-4339

VL - 7

SP - C2-425-C2-426

JO - Journal De Physique. IV : JP

JF - Journal De Physique. IV : JP

IS - 2 Part 1

ER -

Spin dependent EXAFS in DyFe₂

Abstract

Access to Document

Other files and links

Fingerprint

Cite this