Magnetic Layer Composition Effect on Giant Magnetoresistance in (NiFeCo/Cu) Multilayers

✍ Scribed by Meziane Mtalsi, D. ;El Harfaoui, M. ;Qachaou, A. ;Faris, M. ;Ben Youssef, J. ;Le Gall, H.

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 153 KB
• Volume: 187
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/1521-396x(200110)187:2<633::aid-pssa633>3.0.co;2-m

✦ Synopsis

In this work, we present a study of the structural, magnetic and magnetotransport properties in magnetic multilayered structures (NiFeCo/Cu) at room temperature. The magnetic (m) and nonmagnetic (nm) layer thickness (t m , t nm ) and the composition of the magnetic layer effect on the magnetoresistance (MR) have been investigated experimentally and discussed theoretically in the framework of the Johnson-Camley semiclassical approach, based on the Boltzmann transport equation. The observed MR ratio oscillates for the Cu layer thickness with an average period of 12 A and decreases from one system to another less rich in Co. The MR peak position depends on the magnetic layer composition. The materials become harder with increasing Co concentration.