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An In-Situ Oblique-Incidence Optical Reflectance Difference Study of Co Electrodeposition on a Polycrystalline Au(111) Surface

Published online by Cambridge University Press:  01 February 2011

J. Gray ,
W. Schwarzacher  and
X.D. Zhu
J. Gray
Affiliation:
University of California, Davis Davis, CA 95616, U.S.A.
W. Schwarzacher
Affiliation:
H.H. Wills Physics Laboratory, Tyndall Avenue Bristol BS8 1TL, U.K.
X.D. Zhu
Affiliation:
University of California, Davis Davis, CA 95616, U.S.A.
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Abstract

We studied submonolayer and multilayer deposition of Co on Au(111) using in-situ oblique-incidence optical reflectance difference (OI-RD). We show that the optical technique is highly sensitive and accurate in determining the electrodeposited film thickness and growth mode. We found that the optically determined thickness of the ultrathin Co film is in very good agreement with that deduced from the integration of the anodic current during cyclic voltammetry (CV). From a weak oscillatory behavior of the optical reflectance difference signal, it seems that the growth of electrodeposited Co on Au(111) under pulsed deposition condition proceeds by a combination of three dimensional island and quasi layer-by-layer growth modes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 721: Symposia E/J – Texture and Microstructure in Electronic and Magnetic Films – Nanostructural Magnetic Materials for Data Storage , 2002 , J1.4
Copyright
Copyright © Materials Research Society 2002

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