Correlation between local Fe states and magnetoresistivity in granular films containing FeCoZr nanoparticles embedded into oxygen-free dielectric matrix

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• 作者：J.V. Kasiuk ; J.A. Fedotova ; T.N. Koltunowicz ; P. Zukowski ; A.M. Saad ; J. Przewoznik ; Cz. Kapusta ; J. Zukrowski ; I.A. Svito
• 关键词：Nanocomposites ; Magnetoresistance ; Mö ; ssbauer spectroscopy
• 刊名：Journal of Alloys and Compounds
• 出版年：15 February, 2014
• 年：2014
• 卷：586
• 期：supp_S1
• 页码：S432-S435
• 全文大小：888 K

文摘

The paper reports on a comparative study of local Fe states, phase composition and magnetoresistivity of granular nanocomposite films FeCoZr-CaF₂ sintered in pure Ar and Ar + O sputtering atmosphere. For the first time peculiarities of temperature and magnetic field dependencies of magnetoresistance are analyzed with respect to partial oxidation of nanoparticles and perpendicular magnetic shape anisotropy.