Spin-valve effects in point contacts to exchange biased Сo₄₀Fe₄₀B₂₀ films

Spin-valve effects in point contacts to exchange biased Сo₄₀Fe₄₀B₂₀ films

Balkashin, O.P. ; Fisun, V.V. ; Triputen, L.Yu. ; Andersson, S. ; Korenivsk, V. ; Naidyuk, Yu.G.

Тема: III Международный семинар по микроконтактной спектроскопии

Інший ID: PACS 72.25.–b, 76.40.Jn, 75.75.–c

URI: http://dspace.nbuv.gov.ua/handle/123456789/119673

Посилання: Spin-valve effects in point contacts to exchange biased Сo₄₀Fe₄₀B₂₀ films / O.P. Balkashin, V.V. Fisun, L.Yu. Triputen, S. Andersson, V. Korenivski, Yu.G. Naidyuk1 // Физика низких температур. — 2014. — Т. 40, № 10. — С. 1170-1174. — Бібліогр.: 24 назв. — англ.

Підтримка: Funding by the National Academy of Sciences of Ukraine under project 26/14-Н (NANO) is gratefully acknowledged.

Дата: 2014

Завантажень: 354

Spin-valve effects in point contacts to exchange biased Сo₄₀Fe₄₀B₂₀ films

Анотація:

Nonlinear current-voltage characteristics and magnetoresistance of point contacts between a normal metal (N) and films of amorphous ferromagnet (F) Сo₄₀Fe₄₀B₂₀ 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 Сo₄₀Fe₄₀B₂₀ 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.

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