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 °C in air and reducing (10% H2–90% 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 °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.
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The Department of Science and Technology (DST), Govt. of India, is thankfully acknowledged for supporting this work under the Nano Mission programme (project # SR/S5/NM-17/2006).
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PRAMANIK, S., DE, G. Chemically ordered face-centred tetragonal Fe–Pt nanoparticles embedded SiO2 films. Bull Mater Sci 35, 1079–1085 (2012). https://doi.org/10.1007/s12034-012-0406-3
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DOI: https://doi.org/10.1007/s12034-012-0406-3