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Current-field diagram of magnetic states of a surface spin valve in a point contact with a single ferromagnetic film

Authors :
Yanson, I. K.
Balkashin, O. P.
Fisun, V. V.
Yanson, Yu. I.
Naidyuk, Yu. G.
Source :
Fizika Nizkikh Temperatur, V.39, No.3, pp.360-366 (2013)
Publication Year :
2013

Abstract

We present a study of the influence of an external magnetic field H and an electric current I on the spin-valve (SV) effect between a ferromagnetic thin film (F) and a sharp tip of a nonmagnetic metal (N). To explain our observations, we propose a model of a local surface SV which is formed in such a N/F contact. In this model, a ferromagnetic cluster at the N/F interface plays the role of the free layer in this SV. This cluster exhibits a larger coercive field than the bulk of the ferromagnetic film, presumably due to its nanoscale nature. Finally, we construct a magnetic state diagram of the surface SV as a function of I and H.<br />Comment: 7 pages and 5 figs. in pdf file, final version is published in Fiz. Nizk. Temp. with free access after registration: http://fnte.ilt.kharkov.ua/main.php?page=10

Details

Database :
arXiv
Journal :
Fizika Nizkikh Temperatur, V.39, No.3, pp.360-366 (2013)
Publication Type :
Report
Accession number :
edsarx.1301.7635
Document Type :
Working Paper
Full Text :
https://doi.org/10.1063/1.4795199