Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators
2016 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 52, no 7, 6500304Article in journal (Refereed) PublishedText
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 technique. Transport measurements on a Pd(5)-Cu(20)-Ni81Fe19(7)-Cu(2)-Pd(2) (in nanometers) stack with a 100 nm diameter nanocontact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24 and -24 mA suggest that a vortex has been ejected from the nanocontact and become pinned at the edge of the region that is visible through the Au mask.
Place, publisher, year, edition, pages
IEEE , 2016. Vol. 52, no 7, 6500304
holography with extended reference by autocorrelation linear differential operator (HERALDO), magnetic vortex, spin-transfer torque (STT), X-ray holography
IdentifiersURN: urn:nbn:se:kth:diva-190562DOI: 10.1109/TMAG.2016.2528959ISI: 000379924800132ScopusID: 2-s2.0-84977111259OAI: oai:DiVA.org:kth-190562DiVA: diva2:952801
QC 201608152016-08-152016-08-122016-08-15Bibliographically approved