On the Possibility of Training Demonstration of the Giant Magnetoresistance Effect in Higher School

Лобода, В. Б.; Dovzhyk, М. Ya.; Kravchenko, V. O.; Khursenko, S. M.; Shkurdoda, Yu. O.

doi:10.1007/978-981-13-6133-3_8

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“…A significant amount of experimental and theoretical results have been accumulated in the study of the phenomenon of giant magnetoresistance (GMR). It has been shown theoretically that inversion (sign reversal) of the GMR effect is possible provided that the spin asymmetry in electron scattering is opposite in adjacent ferromagnetic layers [9]. Therefore, the aim of this work was to study the features of the magnetoresistive properties of the asymmetric three-layer structures Сo1 -xCrx/Cu/Co/substrate (S) with Cr concentration in the upper layer of x  30 аt.…”

Section: Introductionmentioning

confidence: 99%

Structure and Magnetoresistive Properties of Three-layer Films Сo(1 – x)Crx/Cu/Co

Bezdidko¹,

Nepijko²,

Shkurdoda³

et al. 2021

J. Nano- Electron. Phys.

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The paper presents experimental results concerning the structural-phase state, diffusion processes and magnetoresistive properties of three-layer films Сo(1 -x)Crx/Cu/Co/substrate (S) with Cr concentration in the upper layer up to 30 at. %. It is shown that the phase composition of both as-deposited and thermostabilized at the temperature of 700 K film samples with the layer thickness of 1÷30 nm corresponds to α(Co), f.c.c.(Cu) and α(Сo1 -xCrx). Studies of diffusion processes have shown that in the systems Сo(1 -x )Crx/Cu/Co/S the individuality of the layers is largely preserved both in the as-deposited state and after annealing at Tа  700 K with the penetration of Cr atoms through the Cu layer. It was found that for as-deposited and annealed at temperatures of 400 and 550 K films Сo(1 -x)Crx/Cu/Co/S with cCr  30 at. % in the upper layer, dF  20÷30 nm and dN  3÷15 nm there is an atypical character of the behavior of the field dependences of the magnetoresistance is due to the different values of the spin asymmetry coefficients of the ferromagnetic layers α

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Section: Introductionmentioning

confidence: 99%