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The role of interfaces on the magnetic behavior of granular CuFeCo alloys

Ghafari, M. ; Volland, A. ; Hahn, Horst (2005):
The role of interfaces on the magnetic behavior of granular CuFeCo alloys.
In: Physica Status Solidi A : Applications and Materials Science, 202 (10), pp. 2008-2012. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, [Article]

Abstract

Granular thin films of face centered tetragonal (fct) FeCo-clusters in a γ-CuCo matrix show a giant magneto resistance effect. Cu100–x(Fe50Co50)x samples with 63 ≤ x ≤ 88 were examined using Mössbauer Spectroscopy, electron microscopy, Magnetoresistance, SQUID and Rutherford Backscattering Spectroscopy. In ultrafine particles with fct-FeCo imbedded in a CuCo matrix the giant magneto resistance effect is strongly correlated to the ratio of interface/bulk. The magnetic interfaces form an additional scattering centere for the electrons which causes an increase of the GMR effect.

Item Type: Article
Erschienen: 2005
Creators: Ghafari, M. ; Volland, A. ; Hahn, Horst
Title: The role of interfaces on the magnetic behavior of granular CuFeCo alloys
Language: English
Abstract:

Granular thin films of face centered tetragonal (fct) FeCo-clusters in a γ-CuCo matrix show a giant magneto resistance effect. Cu100–x(Fe50Co50)x samples with 63 ≤ x ≤ 88 were examined using Mössbauer Spectroscopy, electron microscopy, Magnetoresistance, SQUID and Rutherford Backscattering Spectroscopy. In ultrafine particles with fct-FeCo imbedded in a CuCo matrix the giant magneto resistance effect is strongly correlated to the ratio of interface/bulk. The magnetic interfaces form an additional scattering centere for the electrons which causes an increase of the GMR effect.

Journal or Publication Title: Physica Status Solidi A : Applications and Materials Science
Journal Volume: 202
Issue Number: 10
Publisher: WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
Date Deposited: 20 Nov 2008 08:24
License: [undefiniert]
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