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Compositionally Graded Microstructure for Ag-Fe Nanoparticles

Srivastava, Chandan and Sushma, KVL (2012) Compositionally Graded Microstructure for Ag-Fe Nanoparticles. In: NANO-MICRO LETTERS, 4 (3). pp. 172-175.

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Official URL: http://dx.doi.org/10.3786/nml.v4i3.p172-175

Abstract

Ag-Fe nanoparticles with a highly Ag rich average composition were synthesized by the sonochemical route. Silver-iron system exhibits a wide miscibility gap in the bulk materials. Interestingly, a graded compositional profile along the nanoparticle radius was observed. Regions at and near the surface of the nanoparticle contained both Ag and Fe atoms. The composition got relatively deficient Fe towards the center of the particle with particle core made up of pure Ag. Alloying of Ag and Fe is confirmed by the absence of diffraction signal corresponding to pure Fe phase and presence of a paramagnetic phase in nanoparticles containing a diamagnetic (Ag) and ferromagnetic (Fe) elements.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to OPEN ACCESS HOUSE SCIENCE & TECHNOLOGY, USA
Keywords: Nanoparticles;Electron Microscopy;Ag-Fe; Miscibility gap;Solid solution;Microstructure
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Francis Jayakanth
Date Deposited: 09 Mar 2013 07:23
Last Modified: 09 Mar 2013 07:23
URI: http://eprints.iisc.ac.in/id/eprint/46012

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