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 Applied Physics
Paper
Kerr rotation measurements on amorphous U-As-Co thin films
Abstract
Thin films of (U-As)100-xCox alloys are prepared by magnetron sputtering over the entire composition range x and the polar Kerr rotation and magnetization are measured. The absolute value of the maximum Kerr rotation decreases rapidly from -0.48° for Co (x=100) to -0.09° for x=66 at 300 K. A similar decrease is observed at 10 K but at a slightly slower rate. The Kerr rotation as well as the magnetization are negligible at x≅50, indicating a suppression of the magnetic moments in Co and U, simultaneously. This result is explained in terms of filling in the Co 3d conduction band. At x≤30, U develops a magnetic moment at 10 K but Co does not seem to contribute to the magnetization for these compositions.