FMR study of ultrahigh vacuum e-beam evaporated Co23Cu77 nanogranular films: Magnetotransport properties

The magnetic, magnetotransport and structural properties of Co23Cu77 granular thin films (7–43 nm) have been investigated using ferromagnetic resonance (FMR) and high‐resolution XRD techniques. Co particles possess a crystalline fcc structure in the investigated films. A correlation between the GMR...

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Veröffentlicht in:	Physica status solidi. A, Applications and materials science Applications and materials science, 2006-05, Vol.203 (7), p.1573-1579
Hauptverfasser:	Öksüzoglu, R. Mustafa, Yalcın, Nuh, Aktas, Bekir, Fuess, Hartmut
Format:	Artikel
Sprache:	eng
Schlagworte:	61.10.Eq 75.47.De 75.50.Tt 76.50.+g 81.15.Jj Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances spin-wave resonance Giant magnetoresistance Magnetic properties and materials Magnetic resonances and relaxations in condensed matter, mössbauer effect Magnetotransport phenomena, materials for magnetotransport Physics
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Zusammenfassung:	The magnetic, magnetotransport and structural properties of Co23Cu77 granular thin films (7–43 nm) have been investigated using ferromagnetic resonance (FMR) and high‐resolution XRD techniques. Co particles possess a crystalline fcc structure in the investigated films. A correlation between the GMR effect and the anisotropy field has been found, which increases with increasing film thickness. Temperature‐dependent FMR measurements revealed a blocking effect, which results from the competition of long range dipole–dipole interaction and anisotropy fields of Co particles. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:	1862-6300 0031-8965 1862-6319
DOI:	10.1002/pssa.200563131