Magnetic moment in the top Pt layer of Co/Pt bilayers

M. Suzuki; H. Miyagawa; N. Kawamura; H. Muraoka; Y. Inaba; T. Shimatsu; Y. Sonobe; Y. Isohama; N. Nakamura; N. Ishimatsu; H. Maruyama

doi:10.1238/Physica.Topical.115a00580

Magnetic moment in the top Pt layer of Co/Pt bilayers

M. Suzuki, H. Miyagawa, N. Kawamura, H. Muraoka, Y. Inaba, T. Shimatsu, Y. Sonobe, Y. Isohama, N. Nakamura, N. Ishimatsu, H. Maruyama

FRIS - Advanced Interdisciplinary Research Division

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

2 Citations (Scopus)

Abstract

The magnetic properties of a few atomic Pt layers on a 15nm thick Co film were studied by x-ray magnetic circular dichroism spectroscopy at the Pt L _2,3 edges. The spin and orbital magnetic moments of the Pt 5d electrons were separated using the magneto-optical sum rules. The Pt magnetization profile as a function of distance from the Co-Pt interface was determined using data from a series of films with various Pt thicknesses. This magnetization profile was approximated by an exponential function with a decay length of 0.41nm, which characterizes the effective range of the magnetic coupling between Co and Pt. The total magnetic moment of a Pt atom at the interface was 0.7μ_B/atom including a 13% orbital moment. This is discussed in the context of the thermal stability of magnetic recording media capped with a thin layer of Pt.

Original language	English
Pages (from-to)	580-582
Number of pages	3
Journal	Physica Scripta
Volume	T115
DOIs	https://doi.org/10.1238/Physica.Topical.115a00580
Publication status	Published - 2005
Event	12th X-ray Absorption Fine Structure International Conference, XAFS12 - Malmo, Sweden Duration: 2003 Jun 23 → 2003 Jun 27

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10.1238/Physica.Topical.115a00580

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title = "Magnetic moment in the top Pt layer of Co/Pt bilayers",

abstract = "The magnetic properties of a few atomic Pt layers on a 15nm thick Co film were studied by x-ray magnetic circular dichroism spectroscopy at the Pt L 2,3 edges. The spin and orbital magnetic moments of the Pt 5d electrons were separated using the magneto-optical sum rules. The Pt magnetization profile as a function of distance from the Co-Pt interface was determined using data from a series of films with various Pt thicknesses. This magnetization profile was approximated by an exponential function with a decay length of 0.41nm, which characterizes the effective range of the magnetic coupling between Co and Pt. The total magnetic moment of a Pt atom at the interface was 0.7μB/atom including a 13% orbital moment. This is discussed in the context of the thermal stability of magnetic recording media capped with a thin layer of Pt.",

author = "M. Suzuki and H. Miyagawa and N. Kawamura and H. Muraoka and Y. Inaba and T. Shimatsu and Y. Sonobe and Y. Isohama and N. Nakamura and N. Ishimatsu and H. Maruyama",

year = "2005",

doi = "10.1238/Physica.Topical.115a00580",

language = "English",

volume = "T115",

pages = "580--582",

journal = "Physica Scripta",

issn = "0031-8949",

publisher = "IOP Publishing Ltd.",

note = "12th X-ray Absorption Fine Structure International Conference, XAFS12 ; Conference date: 23-06-2003 Through 27-06-2003",

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TY - JOUR

T1 - Magnetic moment in the top Pt layer of Co/Pt bilayers

AU - Suzuki, M.

AU - Miyagawa, H.

AU - Kawamura, N.

AU - Muraoka, H.

AU - Inaba, Y.

AU - Shimatsu, T.

AU - Sonobe, Y.

AU - Isohama, Y.

AU - Nakamura, N.

AU - Ishimatsu, N.

AU - Maruyama, H.

PY - 2005

Y1 - 2005

N2 - The magnetic properties of a few atomic Pt layers on a 15nm thick Co film were studied by x-ray magnetic circular dichroism spectroscopy at the Pt L 2,3 edges. The spin and orbital magnetic moments of the Pt 5d electrons were separated using the magneto-optical sum rules. The Pt magnetization profile as a function of distance from the Co-Pt interface was determined using data from a series of films with various Pt thicknesses. This magnetization profile was approximated by an exponential function with a decay length of 0.41nm, which characterizes the effective range of the magnetic coupling between Co and Pt. The total magnetic moment of a Pt atom at the interface was 0.7μB/atom including a 13% orbital moment. This is discussed in the context of the thermal stability of magnetic recording media capped with a thin layer of Pt.

AB - The magnetic properties of a few atomic Pt layers on a 15nm thick Co film were studied by x-ray magnetic circular dichroism spectroscopy at the Pt L 2,3 edges. The spin and orbital magnetic moments of the Pt 5d electrons were separated using the magneto-optical sum rules. The Pt magnetization profile as a function of distance from the Co-Pt interface was determined using data from a series of films with various Pt thicknesses. This magnetization profile was approximated by an exponential function with a decay length of 0.41nm, which characterizes the effective range of the magnetic coupling between Co and Pt. The total magnetic moment of a Pt atom at the interface was 0.7μB/atom including a 13% orbital moment. This is discussed in the context of the thermal stability of magnetic recording media capped with a thin layer of Pt.

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U2 - 10.1238/Physica.Topical.115a00580

DO - 10.1238/Physica.Topical.115a00580

M3 - Conference article

AN - SCOPUS:42149143480

SN - 0031-8949

VL - T115

SP - 580

EP - 582

JO - Physica Scripta

JF - Physica Scripta

T2 - 12th X-ray Absorption Fine Structure International Conference, XAFS12

Y2 - 23 June 2003 through 27 June 2003

ER -

Magnetic moment in the top Pt layer of Co/Pt bilayers

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