Structural transition in epitaxial Co/Cr multilayers as studied by X-ray absorption spectroscopy

W. F. Pong; Y. C. Liou; K. H. Chang; M. H. Tsai; H. H. Hseih; Y. K. Chang; P. K. Tseng; J. F. Lee; Y. Liou; J. C.A. Huang

doi:10.1107/S0909049598015982

Structural transition in epitaxial Co/Cr multilayers as studied by X-ray absorption spectroscopy

W. F. Pong, Y. C. Liou, K. H. Chang, M. H. Tsai, H. H. Hseih, Y. K. Chang, P. K. Tseng, J. F. Lee, Y. Liou, J. C.A. Huang

物理學系

研究成果: Article › 同行評審

5 引文斯高帕斯（Scopus）

摘要

We have performed Cr and Co K-edge x-ray-absorption measurements to investigate the dependence of local electronic and atomic structures on the Cr-layer thickness in epitaxial Co (40Å)/Cr (t_Cr) (t_Cr = 2, 3, 5, 7, and 9Å) multilayers. The Cr K x-ray absorption near edge structure (XANES) spectra of Co/Cr multilayers indicate an abrupt transition of the Cr layer from a bcc structure to a hep structure when the thickness of the Cr layer is decreased down to ∼5Å or three atomic layers. The structural transition and bond-length distortion in Cr and Co layers observed in the extended x-ray absorption fine structure (EXAFS) measurements are consistent with the XANES results.

原文	English
頁（從 - 到）	746-748
頁數	3
期刊	Journal of Synchrotron Radiation
卷	6
發行號	3
DOIs	https://doi.org/10.1107/S0909049598015982
出版狀態	Published - 1999 5月 1

All Science Journal Classification (ASJC) codes

輻射
核能與高能物理
儀器

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10.1107/S0909049598015982

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title = "Structural transition in epitaxial Co/Cr multilayers as studied by X-ray absorption spectroscopy",

abstract = "We have performed Cr and Co K-edge x-ray-absorption measurements to investigate the dependence of local electronic and atomic structures on the Cr-layer thickness in epitaxial Co (40{\AA})/Cr (tCr) (tCr = 2, 3, 5, 7, and 9{\AA}) multilayers. The Cr K x-ray absorption near edge structure (XANES) spectra of Co/Cr multilayers indicate an abrupt transition of the Cr layer from a bcc structure to a hep structure when the thickness of the Cr layer is decreased down to ∼5{\AA} or three atomic layers. The structural transition and bond-length distortion in Cr and Co layers observed in the extended x-ray absorption fine structure (EXAFS) measurements are consistent with the XANES results.",

author = "Pong, {W. F.} and Liou, {Y. C.} and Chang, {K. H.} and Tsai, {M. H.} and Hseih, {H. H.} and Chang, {Y. K.} and Tseng, {P. K.} and Lee, {J. F.} and Y. Liou and Huang, {J. C.A.}",

year = "1999",

month = may,

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doi = "10.1107/S0909049598015982",

language = "English",

volume = "6",

pages = "746--748",

journal = "Journal of Synchrotron Radiation",

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publisher = "International Union of Crystallography",

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TY - JOUR

T1 - Structural transition in epitaxial Co/Cr multilayers as studied by X-ray absorption spectroscopy

AU - Pong, W. F.

AU - Liou, Y. C.

AU - Chang, K. H.

AU - Tsai, M. H.

AU - Hseih, H. H.

AU - Chang, Y. K.

AU - Tseng, P. K.

AU - Lee, J. F.

AU - Liou, Y.

AU - Huang, J. C.A.

PY - 1999/5/1

Y1 - 1999/5/1

N2 - We have performed Cr and Co K-edge x-ray-absorption measurements to investigate the dependence of local electronic and atomic structures on the Cr-layer thickness in epitaxial Co (40Å)/Cr (tCr) (tCr = 2, 3, 5, 7, and 9Å) multilayers. The Cr K x-ray absorption near edge structure (XANES) spectra of Co/Cr multilayers indicate an abrupt transition of the Cr layer from a bcc structure to a hep structure when the thickness of the Cr layer is decreased down to ∼5Å or three atomic layers. The structural transition and bond-length distortion in Cr and Co layers observed in the extended x-ray absorption fine structure (EXAFS) measurements are consistent with the XANES results.

AB - We have performed Cr and Co K-edge x-ray-absorption measurements to investigate the dependence of local electronic and atomic structures on the Cr-layer thickness in epitaxial Co (40Å)/Cr (tCr) (tCr = 2, 3, 5, 7, and 9Å) multilayers. The Cr K x-ray absorption near edge structure (XANES) spectra of Co/Cr multilayers indicate an abrupt transition of the Cr layer from a bcc structure to a hep structure when the thickness of the Cr layer is decreased down to ∼5Å or three atomic layers. The structural transition and bond-length distortion in Cr and Co layers observed in the extended x-ray absorption fine structure (EXAFS) measurements are consistent with the XANES results.

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DO - 10.1107/S0909049598015982

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AN - SCOPUS:0033471834

SN - 0909-0495

VL - 6

SP - 746

EP - 748

JO - Journal of Synchrotron Radiation

JF - Journal of Synchrotron Radiation

IS - 3

ER -

Structural transition in epitaxial Co/Cr multilayers as studied by X-ray absorption spectroscopy

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