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Magnetization and Magnetotransport Properties of Thermally Evaporated Co-Sn-Co Trilayer

Published online by Cambridge University Press:  26 February 2011

Alessandro Chiolerio
Affiliation:
alessandro.chiolerio@polito.it, Politecnico di Torino, Physics, Corso Duca degli Abruzzi 24, TORINO, I-10129, Italy
Paolo Allia
Affiliation:
paolo.allia@polito.it, Politecnico di Torino, Physics, Corso Duca degli Abruzzi 24, TORINO, I-10129, Italy
Marco Coisson
Affiliation:
m.coisson@inrim.it, INRIM, Divisione Elettromagnetismo, Strada delle Cacce 91, Torino, I-10127, Italy
Paola Tiberto
Affiliation:
p.tiberto@inrim.it, INRIM, Divisione Elettromagnetismo, Strada delle Cacce 91, Torino, I-10127, Italy
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Abstract

We report on growth, morphology and magnetic behavior of the pseudo spin-valve (PSV) Si/Co(15 nm)/Sn(50 nm)/Co(15 nm). Thermal evaporation was chosen as experimental deposition technique for its versatility and cost effectiveness. Magnetisation and magnetotransport measurements performed at low temperature showed that the sample has a complex behaviour related to the different morphology and thickness of the outer Co layers. Combining magnetic and magnetotransport data, a model based on three magnetic phases has been developed, associating them to the Co underlayer, to the Co cap layer and to possible nanometre-sized Co islands embedded in the Sn layer, respectively. A three-phase model coherently explains both magnetisation and magnetoresistance datasets.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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