Authors: Teh, S. H.¹; Yaacob, I. I.²

Source: Materials Research Innovations, Volume 13, Number 3, September 2009 , pp. 199-202(4)

Publisher: Maney Publishing

Abstract:

Iron–platinum (FePt) nanostructured thin films were deposited on brass substrates using a novel stable single bath electrodeposition system. Complex-forming additive was added to stabilise the Fe²⁺ ions. The composition of the electrodeposited film was controlled by varying current density, concentration of the electrolytes and concentration of the complex-forming additive in the electrolyte. The as synthesised FePt films were characterised by energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and scanning electron microscopy (SEM). energy dispersive X-ray spectroscopy showed that FePt films deposited from solution with Fe²⁺/Pt⁴⁺ molar ratio of 25 : 25 contained higher amount of Fe, in proportion with increasing concentration of complex-forming additive in the electrolyte. However, FePt thin film with higher platinum content was obtained from solution with Fe²⁺/Pt⁴⁺ molar ratio of 200 : 1 and without complex forming additive. X-ray diffraction characterisation showed formation of disordered face centred cubic FePt in the as deposited films while the Fe-rich film exhibited body centred cubic lattice structure. The average crystallite size of deposited films varied from 4·3 to 39 nm. The crystallite sizes estimated from XRD peak broadening were smaller than the those observed by SEM, indicating that the grains were polycrystalline.

Keywords: CRYSTALLITE; IRON?PLATINUM; NANOSTRUCTURED; THIN FILMS; ELECTRODEPOSITION

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/143307509X437617

Affiliations: 1: Center for Nanotechnology, Precision and Advanced Materials, Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;, Email: seohhian@yahoo.com 2: Center for Nanotechnology, Precision and Advanced Materials, Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

Publication date: 2009-09-01

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