Fe/FeO/Fe/FeV Multilayers Characterized by Magnetometry and Polarized Neutron Reflectometry

Sara J. Callori; Kai Han Chao; Grace L. Causer; Bela Nagy; Laszlo F. Kiss; Attila Sulyok; Laszlo Bottyan; Ko Wei Lin; Frank Klose

doi:10.1109/LMAG.2016.2628020

Fe/FeO/Fe/FeV Multilayers Characterized by Magnetometry and Polarized Neutron Reflectometry

Sara J. Callori, Kai Han Chao, Grace L. Causer, Bela Nagy, Laszlo F. Kiss, Attila Sulyok, Laszlo Bottyan, Ko Wei Lin, Frank Klose

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

1 Citation (Scopus)

Abstract

We use argon ion-bombardment during Fe layer deposition as a way to tailor the structural and magnetic properties of bilayer and multilayer systems containing Fe/FeV components. We present structural and magnetic results on Fe/FeV bilayer and Fe/Fe-oxide/Fe/FeV multilayer systems. Magnetization measurements were taken over a range of temperatures and show the expected ferromagnetic behavior for the Fe/FeV bilayer. The Fe/Fe-oxide/Fe/FeV multilayer demonstrates an enhanced coercivity and exchange bias at low temperatures, both due to the presence of the antiferromagnetic Fe-oxide layer. Polarized neutron reflectometry results (scattering length density depth profile and neutron spin asymmetry) were used to identify mixed interfacial layers resulting from ion-bombardment. These demonstrated a lower magnetic moment than bulk Fe layers and may undergo a reversal process that differs from non-mixed layers within the sample.

Original language	English
Article number	7742371
Number of pages	5
Journal	IEEE Magnetics Letters
Volume	8
DOIs	https://doi.org/10.1109/LMAG.2016.2628020
Publication status	Published - 2017
Externally published	Yes

Keywords

exchange bias
magnetic thin films
magnetism in solids
Nanomagnetics
polarized neutron reflectometry

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10.1109/LMAG.2016.2628020

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@article{13d43c9f124d4c1c96370124109662f8,

title = "Fe/FeO/Fe/FeV Multilayers Characterized by Magnetometry and Polarized Neutron Reflectometry",

abstract = "We use argon ion-bombardment during Fe layer deposition as a way to tailor the structural and magnetic properties of bilayer and multilayer systems containing Fe/FeV components. We present structural and magnetic results on Fe/FeV bilayer and Fe/Fe-oxide/Fe/FeV multilayer systems. Magnetization measurements were taken over a range of temperatures and show the expected ferromagnetic behavior for the Fe/FeV bilayer. The Fe/Fe-oxide/Fe/FeV multilayer demonstrates an enhanced coercivity and exchange bias at low temperatures, both due to the presence of the antiferromagnetic Fe-oxide layer. Polarized neutron reflectometry results (scattering length density depth profile and neutron spin asymmetry) were used to identify mixed interfacial layers resulting from ion-bombardment. These demonstrated a lower magnetic moment than bulk Fe layers and may undergo a reversal process that differs from non-mixed layers within the sample.",

keywords = "exchange bias, magnetic thin films, magnetism in solids, Nanomagnetics, polarized neutron reflectometry",

author = "Callori, {Sara J.} and Chao, {Kai Han} and Causer, {Grace L.} and Bela Nagy and Kiss, {Laszlo F.} and Attila Sulyok and Laszlo Bottyan and Lin, {Ko Wei} and Frank Klose",

note = "Publisher Copyright: {\textcopyright} 2010-2012 IEEE.",

year = "2017",

doi = "10.1109/LMAG.2016.2628020",

language = "English",

volume = "8",

journal = "IEEE Magnetics Letters",

issn = "1949-307X",

publisher = "IEEE, Institute of Electrical and Electronics Engineers",

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TY - JOUR

T1 - Fe/FeO/Fe/FeV Multilayers Characterized by Magnetometry and Polarized Neutron Reflectometry

AU - Callori, Sara J.

AU - Chao, Kai Han

AU - Causer, Grace L.

AU - Nagy, Bela

AU - Kiss, Laszlo F.

AU - Sulyok, Attila

AU - Bottyan, Laszlo

AU - Lin, Ko Wei

AU - Klose, Frank

PY - 2017

Y1 - 2017

N2 - We use argon ion-bombardment during Fe layer deposition as a way to tailor the structural and magnetic properties of bilayer and multilayer systems containing Fe/FeV components. We present structural and magnetic results on Fe/FeV bilayer and Fe/Fe-oxide/Fe/FeV multilayer systems. Magnetization measurements were taken over a range of temperatures and show the expected ferromagnetic behavior for the Fe/FeV bilayer. The Fe/Fe-oxide/Fe/FeV multilayer demonstrates an enhanced coercivity and exchange bias at low temperatures, both due to the presence of the antiferromagnetic Fe-oxide layer. Polarized neutron reflectometry results (scattering length density depth profile and neutron spin asymmetry) were used to identify mixed interfacial layers resulting from ion-bombardment. These demonstrated a lower magnetic moment than bulk Fe layers and may undergo a reversal process that differs from non-mixed layers within the sample.

AB - We use argon ion-bombardment during Fe layer deposition as a way to tailor the structural and magnetic properties of bilayer and multilayer systems containing Fe/FeV components. We present structural and magnetic results on Fe/FeV bilayer and Fe/Fe-oxide/Fe/FeV multilayer systems. Magnetization measurements were taken over a range of temperatures and show the expected ferromagnetic behavior for the Fe/FeV bilayer. The Fe/Fe-oxide/Fe/FeV multilayer demonstrates an enhanced coercivity and exchange bias at low temperatures, both due to the presence of the antiferromagnetic Fe-oxide layer. Polarized neutron reflectometry results (scattering length density depth profile and neutron spin asymmetry) were used to identify mixed interfacial layers resulting from ion-bombardment. These demonstrated a lower magnetic moment than bulk Fe layers and may undergo a reversal process that differs from non-mixed layers within the sample.

KW - exchange bias

KW - magnetic thin films

KW - magnetism in solids

KW - Nanomagnetics

KW - polarized neutron reflectometry

UR - http://www.scopus.com/inward/record.url?scp=85016322406&partnerID=8YFLogxK

U2 - 10.1109/LMAG.2016.2628020

DO - 10.1109/LMAG.2016.2628020

M3 - Article

AN - SCOPUS:85016322406

SN - 1949-307X

VL - 8

JO - IEEE Magnetics Letters

JF - IEEE Magnetics Letters

M1 - 7742371

ER -

Fe/FeO/Fe/FeV Multilayers Characterized by Magnetometry and Polarized Neutron Reflectometry

Abstract

Keywords

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