AVS 51st International Symposium
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP37
Preperation of Ultra-thin Lattice Matched Multilayers of Cr@sub 0.63@Mo@sub0.37@ and MgO

Tuesday, November 16, 2004, 4:00 pm, Room Exhibit Hall B

Session: Poster Session
Presenter: J.T. Gudmundsson, University of Iceland, Iceland
Authors: K.B. Gylfason, Biopharmaceuticals, Iceland
S. Olafsson, University of Iceland, Iceland
I. Meyvantsson, University of Iceland, Iceland
K. Johnsen, Biopharmaceuticals, Iceland
J.T. Gudmundsson, University of Iceland, Iceland
Correspondent: Click to Email
We report on the preparation of a lattice matched hetheroepitaxial system in a magnetron sputtering discharge. Cr@sub 0.63@Mo@sub0.37@ thin films were grown on MgO(1 0 0) using a DC discharge, and an MgO overlayer was grown on top by reactive sputtering in a pulsed bipolar discharge. The composition of the binary metal alloy is chosen so that the film is lattice matched to the substrate when the <100> direction of the film is parallel to the <011> direction of the substrate. Ex situ X-ray diffraction (XRD) and low angle X-ray reflectivity measurements were performed to determine the film structure, film thickness, as well as the surface and interface roughness. The minimum thickness for continuity of the binary metal alloy film was determined using four point probe resistance measurements. The insulating properties of the MgO film as a function of thickness were assessed by measuring the tunnelling current I-V characteristics of a metal-insulator-metal structure.