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Holographic imaging of interlayer coupling in Co/Pt/NiFe
DOI:
10.1088/1367-2630/15/2/023045
Authors:
Thomas A.
Duckworth
(University of Exeter)
,
Feodor Y.
Ogrin
(University of Exeter)
,
Guillaume
Beutier
(SIMaP, Grenoble-INP, CNRS)
,
Sarnjeet S.
Dhesi
(Diamond Light Source)
,
Stuart
Cavill
(University of York, Diamond Light Source)
,
Sean
Langridge
(ISIS)
,
Amy
Whiteside
(University of Leeds)
,
Thomas
Moore
(University of Leeds)
,
Maxime
Dupraz
(SIMaP, Grenoble-INP, CNRS)
,
Flora
Yakhou
(European Synchrotron Radiation Facility)
,
Gerrit
Van Der Laan
(Diamond Light Source)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
New Journal Of Physics
, VOL 15
State:
Published (Approved)
Published:
February 2013

Abstract: We present a method to determine the magnetic configuration of an in-plane magnetized permalloy layer using Fourier transform holography with extended references in an off-normal geometry. We use a narrow slit as an extended holographic reference to record holograms with the sample surface orthogonal to the incident x-ray beam, as well as rotated by 30° and 45° with respect to the beam. To demonstrate the sensitivity of the technique to in-plane magnetization, we present images of flux closed ground states in thin (~50 nm) permalloy elements, less than 1 μm in lateral size. Images of the in-plane domain pattern which is magnetostatically imprinted into a permalloy film by the stray fields generated by an adjacent Co/Pt multilayer were obtained. It is found that, whilst the domain patterns within the two magnetic layers show a strong resemblance at remanence within a pristine sample, the similarities disappear after the sample is exposed to a saturating magnetic field.
Journal Keywords: Configuration; Fourier Transformation; Ground States; Holography; Images; Layers; Magnetic Fields; Magnetization; Permalloy; Sensitivity; X Radiation
Subject Areas:
Physics,
Materials,
Technique Development
Instruments:
I06-Nanoscience
Other Facilities: ID08 at ESRF
Added On:
02/04/2013 13:11
Documents:
Duckworth_2013_New_J._Phys._15_023045.pdf
Discipline Tags:
Technique Development - Materials Science
Physics
Magnetism
Materials Science
Technical Tags:
Spectroscopy
Circular Dichroism (CD)
X-ray Magnetic Circular Dichroism (XMCD)