Reversal mode instability and magnetoresistance in perpendicular (Co/Pd)/Cu/(Co/Ni) pseudo-spin-valves
2013 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 103, no 2, 022409- p.Article in journal (Refereed) Published
We have observed distinct temperature-dependent magnetization reversal modes in a perpendicular (Co/Pd)(4)/Co/Cu/(Co/Ni)(4)/Co pseudo-spin-valve, which are correlated with spin-transport properties. At 300 K, magnetization reversal occurs by vertically correlated domains. Below 200 K the hysteresis loop becomes bifurcated due to laterally correlated reversal of the individual stacks. The magnetic configuration change also leads to higher spin disorders and a significant increase in the giant magnetoresistance effect. First order reversal curve measurements reveal that the coupled state can be re-established through field cycling and allow direct determination of the interlayer coupling strength as a function of temperature.
Place, publisher, year, edition, pages
2013. Vol. 103, no 2, 022409- p.
Giant Magnetoresistance, Magnetization Reversal, Transfer Torques, Anisotropy, Multilayers, Junctions, Films
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-125853DOI: 10.1063/1.4813393ISI: 000321761000051ScopusID: 2-s2.0-84880485761OAI: oai:DiVA.org:kth-125853DiVA: diva2:641172
FunderSwedish Foundation for Strategic Research Swedish Research CouncilKnut and Alice Wallenberg Foundation
QC 201308152013-08-152013-08-152013-08-15Bibliographically approved