Growth mechanism, microstructure, EPMA and Raman studies of pulsed laser deposited Nd1−xBa2+xCu3O7−δ thin films

Palai, R., Romans, E.J., Martin, R.W., Docherty, F.T. and Pegrum, C.M. (2005) Growth mechanism, microstructure, EPMA and Raman studies of pulsed laser deposited Nd1−xBa2+xCu3O7−δ thin films. Physica C: Superconductivity, 424(1-2), pp. 57-71. (doi: 10.1016/j.physc.2005.04.025)

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Abstract

Superconducting thin films of Nd1−xBa2+xCu3O7−δ have been grown on single crystal SrTiO3 substrates by pulsed laser deposition (PLD) using an off-stoichiometric Nd0.97Ba2.03Cu3O6 (Ba-rich NBCO) target. The statistical methods of Experimental design and regression analysis were used to understand and optimise the growth mechanism. The structural properties of both the target and the films were investigated by X-ray diffraction (XRD). The surface morphology of the films was examined by atomic force microscopy (AFM) and scanning tunnelling microscopy (STM). Electron probe microanalysis (EPMA) using a scanning electron microscope equipped with wavelength-dispersive X-ray (WDX) spectrometers was used to carry out qualitative and quantitative analysis of both the target and films. Micro-Raman spectroscopy was used to study the oxygen sublattice vibrations of both the target and the films.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Docherty, Dr Frances
Authors: Palai, R., Romans, E.J., Martin, R.W., Docherty, F.T., and Pegrum, C.M.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Physica C: Superconductivity
Publisher:Elsevier
ISSN:0921-4534
ISSN (Online):1873-2143
Published Online:14 June 2005

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