Size dependence in the magnetization reversal of Fe/Gd multilayers on self-assembled arrays of nanospheres

E. Amaladass; B. Ludescher; G. Schütz; T. Tyliszczak; T. Eimüller

doi:10.1063/1.2802075

Size dependence in the magnetization reversal of Fe/Gd multilayers on self-assembled arrays of nanospheres

E. Amaladass
, B. Ludescher
, G. Schütz
, T. Tyliszczak
, T. Eimüller

Max Planck Institute for Intelligent Systems
Lawrence Berkeley National Laboratory
Max-Planck-lnstitut für Kohlenforschung

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

19 Scopus citations

Abstract

The size dependent magnetization reversal of FeGd multilayers on self-assembled silica nanospheres has been studied by scanning transmission x-ray microscopy. Caps on 800 nm spherules show S -shaped hysteresis loops while the caps on 330 and 160 nm spherules exhibit rectangular loops. This drastic change is attributed to a transition from a radial to a uniaxial magnetization distribution with decreasing diameter and results from the increasing exchange interaction between adjacent moments. Furthermore, element selective studies reveal a transition from an aligned to a twisted magnetic state with reducing size of the nanocaps.

Original language	English
Article number	172514
Journal	Applied Physics Letters
Volume	91
Issue number	17
DOIs	https://doi.org/10.1063/1.2802075
State	Published - 2007
Externally published	Yes

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title = "Size dependence in the magnetization reversal of Fe/Gd multilayers on self-assembled arrays of nanospheres",

abstract = "The size dependent magnetization reversal of FeGd multilayers on self-assembled silica nanospheres has been studied by scanning transmission x-ray microscopy. Caps on 800 nm spherules show S -shaped hysteresis loops while the caps on 330 and 160 nm spherules exhibit rectangular loops. This drastic change is attributed to a transition from a radial to a uniaxial magnetization distribution with decreasing diameter and results from the increasing exchange interaction between adjacent moments. Furthermore, element selective studies reveal a transition from an aligned to a twisted magnetic state with reducing size of the nanocaps.",

author = "E. Amaladass and B. Ludescher and G. Sch{\"u}tz and T. Tyliszczak and T. Eim{\"u}ller",

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journal = "Applied Physics Letters",

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AU - Amaladass, E.

AU - Ludescher, B.

AU - Schütz, G.

AU - Tyliszczak, T.

AU - Eimüller, T.

PY - 2007

Y1 - 2007

N2 - The size dependent magnetization reversal of FeGd multilayers on self-assembled silica nanospheres has been studied by scanning transmission x-ray microscopy. Caps on 800 nm spherules show S -shaped hysteresis loops while the caps on 330 and 160 nm spherules exhibit rectangular loops. This drastic change is attributed to a transition from a radial to a uniaxial magnetization distribution with decreasing diameter and results from the increasing exchange interaction between adjacent moments. Furthermore, element selective studies reveal a transition from an aligned to a twisted magnetic state with reducing size of the nanocaps.

AB - The size dependent magnetization reversal of FeGd multilayers on self-assembled silica nanospheres has been studied by scanning transmission x-ray microscopy. Caps on 800 nm spherules show S -shaped hysteresis loops while the caps on 330 and 160 nm spherules exhibit rectangular loops. This drastic change is attributed to a transition from a radial to a uniaxial magnetization distribution with decreasing diameter and results from the increasing exchange interaction between adjacent moments. Furthermore, element selective studies reveal a transition from an aligned to a twisted magnetic state with reducing size of the nanocaps.

UR - https://www.scopus.com/pages/publications/35548981721

U2 - 10.1063/1.2802075

DO - 10.1063/1.2802075

M3 - Article

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 17

M1 - 172514

ER -

Size dependence in the magnetization reversal of Fe/Gd multilayers on self-assembled arrays of nanospheres

Abstract

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