Crossover from spin-flop coupling to collinear spin alignment in antiferromagnetic/ferromagnetic nanostructures

Erik Folven; Andreas Scholl; Anthony Young; Scott T. Retterer; Jos E. Boschker; Thomas Tybell; Yayoi Takamura; Jostein K. Grepstad

doi:10.1021/nl300361e

Crossover from spin-flop coupling to collinear spin alignment in antiferromagnetic/ferromagnetic nanostructures

Erik Folven
, Andreas Scholl
, Anthony Young
, Scott T. Retterer
, Jos E. Boschker
, Thomas Tybell
, Yayoi Takamura
, Jostein K. Grepstad

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

35 Scopus citations

Abstract

The technologically important exchange coupling in antiferromagnetic/ ferromagnetic bilayers is investigated for embedded nanostructures defined in a LaFeO ₃/La _0.7Sr _0.3MnO ₃ bilayer. Exploiting the element specificity of soft X-ray spectromicroscopy, we selectively probe the magnetic order in the two layers. A transition from perpendicular to parallel spin alignment is observed for these nanostructures, dependent on size and crystalline orientation. The results show that shape-induced anisotropy in the antiferromagnet can override the interface exchange coupling in spin-flop coupled nanostructures.

Original language	English
Pages (from-to)	2386-2390
Number of pages	5
Journal	Nano Letters
Volume	12
Issue number	5
DOIs	https://doi.org/10.1021/nl300361e
State	Published - May 9 2012

Keywords

Spin-flop coupling
X-PEEM
embedded nanostructures
magnetic dichroism
size effects

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10.1021/nl300361e

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title = "Crossover from spin-flop coupling to collinear spin alignment in antiferromagnetic/ferromagnetic nanostructures",

abstract = "The technologically important exchange coupling in antiferromagnetic/ ferromagnetic bilayers is investigated for embedded nanostructures defined in a LaFeO 3/La 0.7Sr 0.3MnO 3 bilayer. Exploiting the element specificity of soft X-ray spectromicroscopy, we selectively probe the magnetic order in the two layers. A transition from perpendicular to parallel spin alignment is observed for these nanostructures, dependent on size and crystalline orientation. The results show that shape-induced anisotropy in the antiferromagnet can override the interface exchange coupling in spin-flop coupled nanostructures.",

keywords = "Spin-flop coupling, X-PEEM, embedded nanostructures, magnetic dichroism, size effects",

author = "Erik Folven and Andreas Scholl and Anthony Young and Retterer, \{Scott T.\} and Boschker, \{Jos E.\} and Thomas Tybell and Yayoi Takamura and Grepstad, \{Jostein K.\}",

year = "2012",

month = may,

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doi = "10.1021/nl300361e",

language = "English",

volume = "12",

pages = "2386--2390",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Crossover from spin-flop coupling to collinear spin alignment in antiferromagnetic/ferromagnetic nanostructures

AU - Folven, Erik

AU - Scholl, Andreas

AU - Young, Anthony

AU - Retterer, Scott T.

AU - Boschker, Jos E.

AU - Tybell, Thomas

AU - Takamura, Yayoi

AU - Grepstad, Jostein K.

PY - 2012/5/9

Y1 - 2012/5/9

N2 - The technologically important exchange coupling in antiferromagnetic/ ferromagnetic bilayers is investigated for embedded nanostructures defined in a LaFeO 3/La 0.7Sr 0.3MnO 3 bilayer. Exploiting the element specificity of soft X-ray spectromicroscopy, we selectively probe the magnetic order in the two layers. A transition from perpendicular to parallel spin alignment is observed for these nanostructures, dependent on size and crystalline orientation. The results show that shape-induced anisotropy in the antiferromagnet can override the interface exchange coupling in spin-flop coupled nanostructures.

AB - The technologically important exchange coupling in antiferromagnetic/ ferromagnetic bilayers is investigated for embedded nanostructures defined in a LaFeO 3/La 0.7Sr 0.3MnO 3 bilayer. Exploiting the element specificity of soft X-ray spectromicroscopy, we selectively probe the magnetic order in the two layers. A transition from perpendicular to parallel spin alignment is observed for these nanostructures, dependent on size and crystalline orientation. The results show that shape-induced anisotropy in the antiferromagnet can override the interface exchange coupling in spin-flop coupled nanostructures.

KW - Spin-flop coupling

KW - X-PEEM

KW - embedded nanostructures

KW - magnetic dichroism

KW - size effects

UR - https://www.scopus.com/pages/publications/84861031489

U2 - 10.1021/nl300361e

DO - 10.1021/nl300361e

M3 - Article

AN - SCOPUS:84861031489

SN - 1530-6984

VL - 12

SP - 2386

EP - 2390

JO - Nano Letters

JF - Nano Letters

IS - 5

ER -

Crossover from spin-flop coupling to collinear spin alignment in antiferromagnetic/ferromagnetic nanostructures

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Keywords

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