Abstract
Studies have been made of the magnetic properties of NiFe ultrathin films 15–100 Å thick. The NiFe films were deposited on Cu, Ti, and Ta underlayers by an ion-beam sputtering method. In the NiFe films deposited on the Cu layers, the saturation magnetization shows little change with thickness down to 60 Å, but below this it shows a gradual decrease with decreasing thickness. The coercivity in the hard axis is almost unaltered with the film thickness, whereas the coercivity in the easy axis and the anisotropy field decrease with decreasing film thickness. Both values greatly decrease below 30 Å. Thickness dependence of the induced uniaxial anisotropy constant and the direct-current permeability were obtained from these parameters. Remarkable decreases of these parameters were observed in the films on the Ti and Ta layers likely owing to the formation of fine islands. Magnetic properties and giant magnetoresistance in multilayers are discussed on the basis of the present experimental results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
