About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Journal of Magnetism and Magnetic Materials
Paper
Structure and magnetism of Ta/Co/Ta sandwiches
Abstract
HRTEM and RT magnetometry were used to characterize Ta/Co/Ta sandwiches sputter-deposited on Si(001) wafers. The sandwiches show an intermixed Ta/Co interface region of about 10 Å thickness, which is connected to the presence of a non-ferromagnetic interfacial layer of 6.6 Å thickness per Ta/Co interface. The Co layer has a textured morphology, composed of columns with diameters of about 10-100 Å, and a marked 〈111〉 fee structure with numerous stacking faults. Repetitions of hep stacking sequences are mainly localized in the narrowest columns. The Ta layer shows a short-range ordering characterized by randomly oriented stacks of a few atomic planes about 10-20 Å large.