Abstract
Gd/Nb/Gd layered films were grown epitaxially in UHV by electron-beam evaporation on a 500-Å-thick Nb buffer layer (substrate: sapphire [Formula: see text]). The deposition temperature was 750° C for the Nb buffer layer and 300° C for the other films. The Gd films grow in (0001) and the Nb films in (110) orientation as determined by X-ray measurements. The magnetization curves of the Gd/Nb/Gd sandwiches (with a protective 50 Å Nb layer on top) were measured with the transverse magnetooptic Kerr-effect. The coercitive field of the sandwiches oscillates as a function of the Nb thickness indicative of an interaction between the two Gd films (thickness 100 Å) through the nonmagnetic Nb interlayer. These oscillations have a period of about 11 ± 2 Å (typical of the magnetic coupling through nonmagnetic transition-metal layers) and were observed for more than three periods in the Nb thickness range from 15 to 55 Å.
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 callDisclaimer: 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.
