Effects of layering and working pressure on magnetic and magnetotransport properties of as sputtered multilayered granular Co/Cu films

✍ Scribed by G. Turilli; L. Pareti; L. Castaldi

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 120 KB
• Volume: 25
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1999.0694

✦ Synopsis

Heterogeneous films of CoCu having high giant magnetoresistance (MR) were prepared in the form of multilayered granular specimens by a two-target RF sputtering. MR performances of 11% at 293 K were obtained in as deposited granular films. The magnetic and magnetotransport properties could be changed to a large extent, by varying the thickness of the deposited Co (Cu) layer as well as the Ar pressure. The effect of Co concentration, in the range 5-30%, and the influence of thermal treatments were also analysed.