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Holographic imaging of magnetization in a single layer nano-contact spin transfer oscillator
DOI:
10.1109/TMAG.2016.2528959
Authors:
Erick Omar
Burgos Parra
(University of Exeter)
,
Nicholas
Bukin
(University of Exeter)
,
Maxime
Dupraz
(SIMAP)
,
Guillaume
Beutier
(CEA, INAC)
,
Sohrab
Redjai Sani
(KTH Royal Institute of Technology)
,
Horia
Popescu
(Synchrotron Soleil)
,
Stuart
Cavill
(University of York; Diamond Light Source)
,
Johan
Akerman
(KTH- Royal Insitute of Technology)
,
Nicolas
Jaouen
(Synchrotron Soleil)
,
Paul
Keatley
(University of Exeter)
,
Robert
Hicken
(University of Exeter)
,
Gerrit
Van Der Laan
(Diamond Light Source)
,
Feodor
Ogrin
(University of Exeter)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Ieee Transactions On Magnetics
State:
Published (Approved)
Published:
February 2016
Abstract: Time-averaged images of the magnetization within single layer spin transfer oscillators have been obtained using the holography with extended reference by autocorrelation linear differential operator (HERALDO) technique. Transport measurements on a Pd(5)-Cu(20)-Ni81Fe19(7)-Cu(2)-Pd(2) (in nm) stack with a 100 nm diameter nano-contact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24mA and -24mA suggest that a vortex has been ejected from the nano-contact and become pinned at the edge of the region that is visible through the Au mask.
Journal Keywords: HERALDO; Magnetic vortex; Spin transfer torque; X-ray holography
Subject Areas:
Physics,
Materials,
Technique Development
Facility: SEXTANTS at SOLEIL
Added On:
15/02/2016 13:08
Discipline Tags:
Physics
Technique Development - Physics
Magnetism
Materials Science
Technical Tags: