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Phase Transformations in Co/Nb and Co/Zr Multilayer Film Stacks.

Published online by Cambridge University Press:  26 July 2012

J. C. Lin and
R. A. Hoffman
J. C. Lin
Affiliation:
Alcoa Laboratories, Alcoa Center, PA 15069
R. A. Hoffman
Affiliation:
Alcoa Laboratories, Alcoa Center, PA 15069
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Abstract

Ion-beam mixing and isothermal annealing techniques were applied to induce phase transformations in Co/Nb and Co/Zr multilayer film stacks. Transmission electron microscopy(TEM) and x-ray diffraction(XRD) were used to characterize the microstructure of the films. Interfacial morphology and chemistry of the films were examined by Rutherford backscattering spectrometry(RBS) and cross-section transmission electron microscopy(XTEM). The formation of amorphous phases was found in both systems by either technique. A comparison of the phase transformation mechanisms induced by ion-beam mixing and isothermal annealing is given. The thermodynamic and kinetic factors controlling the phase formation and stability are discussed. For the isothermal annealing, the final stable configuration is predicted by equilibrium phase diagrams.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 230: Symposium R – Phase Transformation Kinetics in Thin Films , 1991, 73
Copyright
Copyright © Materials Research Society 1992

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