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Room-temperature effective magnetization density as a function of Au underlayer thickness for an 8-ML-thick Co film sandwiched between an -ML-thick Au underlayer and -thick Au overlayer. The negative (positive) indicates that the magnetic moment of the sample is out-of-plane (in-plane) in zero external field. The solid line is a guide to the eye.
Magnetization of the 8-ML-thick Co film (a) with 2-ML-thick Au underlayer (b) with 6-ML-thick Au underlayer. The magnetization loop is measured while the external magnetic field is applied either along the sample surface (∎) or perpendicular to the sample surface (●).
Cross-sectional HRTEM micrographs of (a) Cu 2 ML/Co 8 ML/Au , and (b) Cu 6 ML/Co 8 ML/Au samples along Si zone axis. The insets show SAD patterns of the 8-ML-thick Co layer. For the 2-ML-thick Au sample, Co exhibits a distorted fcc structure, with a diffraction zone axis of . However, for the 6-ML-thick Au sample, Co has a distorted hcp structure, with a diffraction zone axis of .
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