Depth-dependent magnetism in epitaxial MnSb thin films: effects of surface passivation and cleaning

JD Aldous; CW Burrows; I Maskery; MS Brewer; TPA Hase; JA Duffy; MR Lees; C Sanchez-Hanke; Thibault Decoster; Wolfgang Theis; A Quesada; AK Schmid; GR Bell

doi:10.1088/0953-8984/24/14/146002

Depth-dependent magnetism in epitaxial MnSb thin films: effects of surface passivation and cleaning

JD Aldous, CW Burrows, I Maskery, MS Brewer, TPA Hase, JA Duffy, MR Lees, C Sanchez-Hanke, Thibault Decoster, Wolfgang Theis, A Quesada, AK Schmid, GR Bell

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Abstract

Depth-dependent magnetism in MnSb(0001) epitaxial films has been studied by combining experimental methods with different surface specificities: polarized neutron reflectivity, x-ray magnetic circular dichroism (XMCD), x-ray resonant magnetic scattering and spin-polarized low energy electron microscopy (SPLEEM). A native oxide similar to 4.5 nm thick covers air-exposed samples which increases the film's coercivity. HCl etching efficiently removes this oxide and in situ surface treatment of etched samples enables surface magnetic contrast to be observed in SPLEEM. A thin Sb capping layer prevents oxidation and preserves ferromagnetism throughout the MnSb film. The interpretation of Mn L-3,L-2 edge XMCD data is discussed.

Original language	English
Pages (from-to)	146002
Number of pages	1
Journal	Journal of Physics: Condensed Matter
Volume	24
Issue number	14
DOIs	https://doi.org/10.1088/0953-8984/24/14/146002
Publication status	Published - 1 Apr 2012

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Aldous, JD., Burrows, CW., Maskery, I., Brewer, MS., Hase, TPA., Duffy, JA., Lees, MR., Sanchez-Hanke, C., Decoster, T., Theis, W., Quesada, A., Schmid, AK., & Bell, GR. (2012). Depth-dependent magnetism in epitaxial MnSb thin films: effects of surface passivation and cleaning. Journal of Physics: Condensed Matter, 24(14), 146002. https://doi.org/10.1088/0953-8984/24/14/146002

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title = "Depth-dependent magnetism in epitaxial MnSb thin films: effects of surface passivation and cleaning",

abstract = "Depth-dependent magnetism in MnSb(0001) epitaxial films has been studied by combining experimental methods with different surface specificities: polarized neutron reflectivity, x-ray magnetic circular dichroism (XMCD), x-ray resonant magnetic scattering and spin-polarized low energy electron microscopy (SPLEEM). A native oxide similar to 4.5 nm thick covers air-exposed samples which increases the film's coercivity. HCl etching efficiently removes this oxide and in situ surface treatment of etched samples enables surface magnetic contrast to be observed in SPLEEM. A thin Sb capping layer prevents oxidation and preserves ferromagnetism throughout the MnSb film. The interpretation of Mn L-3,L-2 edge XMCD data is discussed.",

author = "JD Aldous and CW Burrows and I Maskery and MS Brewer and TPA Hase and JA Duffy and MR Lees and C Sanchez-Hanke and Thibault Decoster and Wolfgang Theis and A Quesada and AK Schmid and GR Bell",

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doi = "10.1088/0953-8984/24/14/146002",

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Aldous, JD, Burrows, CW, Maskery, I, Brewer, MS, Hase, TPA, Duffy, JA, Lees, MR, Sanchez-Hanke, C, Decoster, T, Theis, W, Quesada, A, Schmid, AK & Bell, GR 2012, 'Depth-dependent magnetism in epitaxial MnSb thin films: effects of surface passivation and cleaning', Journal of Physics: Condensed Matter, vol. 24, no. 14, pp. 146002. https://doi.org/10.1088/0953-8984/24/14/146002

TY - JOUR

T1 - Depth-dependent magnetism in epitaxial MnSb thin films: effects of surface passivation and cleaning

AU - Aldous, JD

AU - Burrows, CW

AU - Maskery, I

AU - Brewer, MS

AU - Hase, TPA

AU - Duffy, JA

AU - Lees, MR

AU - Sanchez-Hanke, C

AU - Decoster, Thibault

AU - Theis, Wolfgang

AU - Quesada, A

AU - Schmid, AK

AU - Bell, GR

PY - 2012/4/1

Y1 - 2012/4/1

N2 - Depth-dependent magnetism in MnSb(0001) epitaxial films has been studied by combining experimental methods with different surface specificities: polarized neutron reflectivity, x-ray magnetic circular dichroism (XMCD), x-ray resonant magnetic scattering and spin-polarized low energy electron microscopy (SPLEEM). A native oxide similar to 4.5 nm thick covers air-exposed samples which increases the film's coercivity. HCl etching efficiently removes this oxide and in situ surface treatment of etched samples enables surface magnetic contrast to be observed in SPLEEM. A thin Sb capping layer prevents oxidation and preserves ferromagnetism throughout the MnSb film. The interpretation of Mn L-3,L-2 edge XMCD data is discussed.

AB - Depth-dependent magnetism in MnSb(0001) epitaxial films has been studied by combining experimental methods with different surface specificities: polarized neutron reflectivity, x-ray magnetic circular dichroism (XMCD), x-ray resonant magnetic scattering and spin-polarized low energy electron microscopy (SPLEEM). A native oxide similar to 4.5 nm thick covers air-exposed samples which increases the film's coercivity. HCl etching efficiently removes this oxide and in situ surface treatment of etched samples enables surface magnetic contrast to be observed in SPLEEM. A thin Sb capping layer prevents oxidation and preserves ferromagnetism throughout the MnSb film. The interpretation of Mn L-3,L-2 edge XMCD data is discussed.

U2 - 10.1088/0953-8984/24/14/146002

DO - 10.1088/0953-8984/24/14/146002

M3 - Article

C2 - 22418020

SN - 1361-648X

VL - 24

SP - 146002

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

IS - 14

ER -

Depth-dependent magnetism in epitaxial MnSb thin films: effects of surface passivation and cleaning

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