Well-defined Co clusters embedded in an Ag matrix: A model system for the giant magnetoresistance in granular films

Autor:	H. Micklitz, M. Holdenried, S. Rubin
Rok vydání:	1998
Předmět:	Materials science Solid-state physics Condensed matter physics Scattering Volume fraction Cluster (physics) Giant magnetoresistance Well-defined Condensed Matter Physics Granular material Electronic Optical and Magnetic Materials Magnetic field
Zdroj:	The European Physical Journal B. 5:23-28
ISSN:	1434-6028
DOI:	10.1007/s100510050414
Popis:	Well-defined granular Co/Ag films have been prepared by the co-deposition of in-beam prepared Co clusters and Ag atoms. In this way we were able to study the giant magnetoresistance (GMR) as a function of mean Co cluster size for a fixed Co cluster volume fraction vcl as well as a function of vcl for a fixed . Mean Co cluster size has been varied between and 6.9 nm, Co cluster volume fraction between 5 and 43%. The GMR was measured in-situ at T=4.2 K in magnetic fields 1.2 T. The analysis of the GMR data obtained from these studies clearly shows that spin-dependent scattering at the Co-cluster/Ag-matrix interface is the only relevant scattering mechanism causing the GMR in our well-defined samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9c8ebd903be03fcc8391fd6073b36dee https://doi.org/10.1007/s100510050414 Zobrazit plný text záznamu Full text from SpringerLink