Rai, Rajesh K and Srivastava, Chandan (2015) Nonequilibrium Microstructures for Ag-Ni Nanowires. In: MICROSCOPY AND MICROANALYSIS, 21 (2). pp. 491-497.
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This work illustrates that a variety of nanowire microstructures can be obtained either by controlling the nanowire formation kinetics or by suitable thermal processing of as-deposited nanowires with nonequilibrium metastable microstructure. In the present work, 200-nm diameter Ag-Ni nanowires with similar compositions, but with significantly different microstructures, were electrodeposited. A 15 mA deposition current produced nanowires in which Ag-rich crystalline nanoparticles were embedded in a Ni-rich amorphous matrix. A 3 mA deposition current produced nanowires in which an Ag-rich crystalline phase formed a backbone-like configuration in the axial region of the nanowire, whereas the peripheral region contained Ni-rich nanocrystalline and amorphous phases. Isothermal annealing of the nanowires illustrated a phase evolution pathway that was extremely sensitive to the initial nanowire microstructure.
| Item Type: | Journal Article |
|---|---|
| Publication: | MICROSCOPY AND MICROANALYSIS |
| Publisher: | CAMBRIDGE UNIV PRESS |
| Additional Information: | Copy right for this article belongs to the CAMBRIDGE UNIV PRESS, 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA |
| Keywords: | Ag-Ni; nanowires; electrodeposition; phase transformation |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 22 May 2015 07:40 |
| Last Modified: | 22 May 2015 07:40 |
| URI: | http://eprints.iisc.ac.in/id/eprint/51571 |
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