Spin-valve effects in point contacts to exchange biased Co40Fe40B20 films
2014 (English)In: Low temperature physics (Woodbury, N.Y., Print), ISSN 1063-777X, Vol. 40, no 10, 915-918 p.Article in journal (Refereed) Published
Nonlinear current-voltage characteristics and magnetoresistance of point contacts between a normal metal (N) and films of amorphous ferromagnet (F) Co40Fe40B20 of different thickness, exchange-biased by antiferromagnetic Mn80Ir20 are studied. A surface spin valve effect in the conductance of such F-N contacts is observed. The effect of exchange bias is found to be inversely proportional to the Co40Fe40B20 film thickness. This behavior as well as other magneto-transport effects we observe on single exchange-pinned ferromagnetic films are similar in nature to those found in conventional three-layer spin-valves.
Place, publisher, year, edition, pages
2014. Vol. 40, no 10, 915-918 p.
Giant Magnetoresistance, Torques, Layers
IdentifiersURN: urn:nbn:se:kth:diva-157628DOI: 10.1063/1.4897413ISI: 000344592700006ScopusID: 2-s2.0-84909945780OAI: oai:DiVA.org:kth-157628DiVA: diva2:770784
QC 201412112014-12-112014-12-112014-12-11Bibliographically approved