/ S. V. Komogortsev [et al.]> // J. Appl. Phys. - 2013. -
Vol. 113,
Is. 17. - Ст. 17C105
DOI 10.1063/1.4794361
Перевод заглавия: Мультислойные наногранулированные пленки (Co40Fe40B20)50(SiO2)50/α-Si:H и (Co40Fe40B20)50(SiO2)50/SiO2: магнитные свойства
Аннотация: Magnetic properties of multilayers, consisting of nanogranular (Co40Fe40B20)50(SiO2)50 layers as thin as magnetic granule diameter alternating the α-Si:H or SiO2 layers and the single layer film (Co40Fe40B20)50(SiO2)50 with the thickness much larger than the magnetic granule diameter are reported and compared. The thick single layer film is ferromagnetic but the multilayer film with the ultrathin granular layers and SiO2 spacer is superparamagnetic. This is interpreted as the result of increasing percolation threshold in the 2D granular media above 50% concentration of magnetic granules in the multilayer with the nonmagnetic and dielectric SiO2 spacer. The multilayer with the α-Si:H spacer is superparamagnetic at 300 K but it becomes ferromagnetic, when temperature is below 250 K. It is assumed to be resulted from the exchange interaction of magnetic granules through the semiconductor α-Si:H layers. The value of exchange interaction through the semiconductor spacer is estimated.
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Держатели документа: Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Voronezh State Tech Univ, Voronezh 394026, Russia
Доп.точки доступа: Komogortsev, S. V.; Комогорцев, Сергей Викторович; Denisova, E. A.; Денисова, Елена
Александровна; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Balaev, A. D.; Балаев, Александр Дмитриевич; Chekanova, L. A.;
Чеканова,
Лидия Александровна; Kalinin, Yu. E.; Sitnikov, A. V.