Atomic scale investigations of the Co/Pt(111) interface structure and magnetic properties

D. W. Moon; Y. H. Ha; Y. Park; J. W. Lee; J. Kim; S. C. Shin

doi:10.1063/1.1388156

Atomic scale investigations of the Co/Pt(111) interface structure and magnetic properties

D. W. Moon, Y. H. Ha, Y. Park, J. W. Lee, J. Kim, S. C. Shin

Department of New Biology

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

10 Scopus citations

Abstract

The interface structure of an ultrathin Co overlayer on a Pt(111) crystal was investigated with atomic-layer resolution medium-energy ion scattering spectroscopy and surface magneto-optical Kerr effect (SMOKE). For a 7 ML Co, interdiffusion begins at 673 K to form a heavily distorted Co-Pt surface alloy layer with little change in SMOKE intensity. However, annealing at 773 K formed a 30 atomic-layer-thick Co-Pt substitutional alloy with 3.7% maximum tensile strain, at which the SMOKE intensity increased more than 200%. The enhancement of the Kerr intensity is discussed with the interface alloy formation.

Original language	English
Pages (from-to)	503-505
Number of pages	3
Journal	Applied Physics Letters
Volume	79
Issue number	4
DOIs	https://doi.org/10.1063/1.1388156
State	Published - 23 Jul 2001

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title = "Atomic scale investigations of the Co/Pt(111) interface structure and magnetic properties",

abstract = "The interface structure of an ultrathin Co overlayer on a Pt(111) crystal was investigated with atomic-layer resolution medium-energy ion scattering spectroscopy and surface magneto-optical Kerr effect (SMOKE). For a 7 ML Co, interdiffusion begins at 673 K to form a heavily distorted Co-Pt surface alloy layer with little change in SMOKE intensity. However, annealing at 773 K formed a 30 atomic-layer-thick Co-Pt substitutional alloy with 3.7\% maximum tensile strain, at which the SMOKE intensity increased more than 200\%. The enhancement of the Kerr intensity is discussed with the interface alloy formation.",

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T1 - Atomic scale investigations of the Co/Pt(111) interface structure and magnetic properties

AU - Moon, D. W.

AU - Ha, Y. H.

AU - Park, Y.

AU - Lee, J. W.

AU - Kim, J.

AU - Shin, S. C.

PY - 2001/7/23

Y1 - 2001/7/23

N2 - The interface structure of an ultrathin Co overlayer on a Pt(111) crystal was investigated with atomic-layer resolution medium-energy ion scattering spectroscopy and surface magneto-optical Kerr effect (SMOKE). For a 7 ML Co, interdiffusion begins at 673 K to form a heavily distorted Co-Pt surface alloy layer with little change in SMOKE intensity. However, annealing at 773 K formed a 30 atomic-layer-thick Co-Pt substitutional alloy with 3.7% maximum tensile strain, at which the SMOKE intensity increased more than 200%. The enhancement of the Kerr intensity is discussed with the interface alloy formation.

AB - The interface structure of an ultrathin Co overlayer on a Pt(111) crystal was investigated with atomic-layer resolution medium-energy ion scattering spectroscopy and surface magneto-optical Kerr effect (SMOKE). For a 7 ML Co, interdiffusion begins at 673 K to form a heavily distorted Co-Pt surface alloy layer with little change in SMOKE intensity. However, annealing at 773 K formed a 30 atomic-layer-thick Co-Pt substitutional alloy with 3.7% maximum tensile strain, at which the SMOKE intensity increased more than 200%. The enhancement of the Kerr intensity is discussed with the interface alloy formation.

UR - https://www.scopus.com/pages/publications/0035939404

U2 - 10.1063/1.1388156

DO - 10.1063/1.1388156

M3 - Article

AN - SCOPUS:0035939404

SN - 0003-6951

VL - 79

SP - 503

EP - 505

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

ER -

Atomic scale investigations of the Co/Pt(111) interface structure and magnetic properties

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