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Early stages of growth and nanostructure of Pb(Zr,Ti)O-3 thin films observed by atomic force microscopy

Craciun, F and Verardi, P and Dinescu, M and Dinelli, F and Kolosov, O (1998) Early stages of growth and nanostructure of Pb(Zr,Ti)O-3 thin films observed by atomic force microscopy. Thin Solid Films, 336 (1-2). pp. 281-285. ISSN 0040-6090

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Abstract

We prepared lead zirconate-titanate (PZT) layers with different thicknesses on Au coated Si(100) and Si(111) wafers by pulsed laser deposition, using the same set of experimental conditions: a Nd-YAG laser, 1064 nm, 10 ns, 10 Hz, substrate temperature 370 degrees C, oxygen pressure 150 mTorr, laser fluence 25 J/cm(2), by varying the number of laser pulses. Different analysis put in evidence the crystallographic structure and chemical composition of films. Surface morphology was examined by atomic force microscopy (AFM). Analysis of films with very few atomic layers suggests that the growth proceeds by Volmer-Weber island-growth mechanism. Different geometrical, chemical and kinetic factors responsible for this type of growth are discussed. Comparative AFM analyses of surface roughness performed on films with different thickness allow for the study of the interface width evolution during the growth and to predict the conditions for obtaining films with a smooth surface. (C) 1998 Elsevier Science S.A. All rights reserved.

Item Type: Article
Journal or Publication Title: Thin Solid Films
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57430
Deposited By: ep_importer_pure
Deposited On: 08 Oct 2012 19:39
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:01
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57430

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