Pramanik, Sourav and De, Goutam (2012) Chemically ordered face-centred tetragonal Fe-Pt nanoparticles embedded SiO2 films. Bulletin of Materials Science, 35 (7). pp. 1079-1085. ISSN 0250-4707

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Abstract

Chemically ordered face-centred tetragonal (fct) Fe-Pt alloy nanoparticles (NPs) embedded SiO2 films were synthesized on glass substrate by in situ hybrid sol-gel approach followed by heating at 450-900 degrees C in air and reducing (10% H-2-90% Ar) atmospheres. Heat treatment of Fe/Pt co-doped films in air caused generation of Pt NPs first. At this stage, Fe remained in ionic state covalently bonded with silica network. Further heat treatment at 800-900 degrees C in reducing atmosphere facilitated the formation of uniformly dispersed fct Fe-Pt alloy NPs in amorphous SiO2 film matrix. The generated alloy composition was estimated by grazing incidence X-ray diffraction and TEM analysis to be Fe0.42Pt0.58 which is close to the nominal value.

Item Type:	Article
Uncontrolled Keywords:	fct Fe-Pt alloy nanoparticles; Pt nanoparticles; sol-gel SiO2 films embedded with nanoparticles; nanocomposite films
Subjects:	Engineering Materials
Divisions:	Nano-Structured Materials
Depositing User:	Bidhan Chaudhuri
Date Deposited:	02 May 2013 12:58
Last Modified:	02 May 2013 12:58
URI:	http://cgcri.csircentral.net/id/eprint/1926

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