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Nonequilibrium Microstructures for Ag–Ni Nanowires

Published online by Cambridge University Press:  06 February 2015

Rajesh K. Rai
Affiliation:
Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
Chandan Srivastava*
Affiliation:
Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
*
*Corresponding author.[email protected]
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Abstract

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.

Type
Materials Applications
Copyright
© Microscopy Society of America 2015 

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References

Aert, S.V., Batenburg, K.J., Rossell, M.D., Erni, R. & Tendeloo, G.V. (2011). Three-dimensional atomic imaging of crystalline nanoparticles. Nature 470, 374377.CrossRefGoogle ScholarPubMed
Bicelli, L.P., Bozzini, B., Mele, C. & D’Urzo, L. (2008). A review of nanostructural aspects of metal electrodeposition. Int J Electrochem Sci 3, 356408.Google Scholar
Cao, G. & Liu, D. (2008). Template-based synthesis of nanorod, nanowire, and nanotube arrays. Adv Colloid Interface Sci 136, 4564.CrossRefGoogle ScholarPubMed
Dimesso, L. & Hahn, H. (1998). Structure and magnetoresistance effect in granular Ag–Ni alloys prepared by gas flow condensation technique. J Appl Phys 84, 953957.CrossRefGoogle Scholar
Huber, C.A., Huber, T.E., Sadoqi, M., Lubin, J.A., Manalis, S. & Prater, C.B. (1994). Nanowire array composites. Science 263, 800802.Google Scholar
Huczko, A. (2000). Template based synthesis of nanomaterials. Appl Phys A 70, 365376.Google Scholar
Hulteen, J.C. & Martin, C.R. (1997). A general template-based method for the preparation of nanomaterials. J Mater Chem 7, 10751087.CrossRefGoogle Scholar
Kim, K., Kim, M. & Cho, S.M. (2006). Pulsed electrodeposition of palladium nanowire arrays using AAO template. Mater Chem Phys 96, 278282.CrossRefGoogle Scholar
Li, J., Liu, J., Jin, M. & Jin, X. (2013). Grain size dependent phase stability of pulse electrodeposited nano-grained Co–Ni films. J Alloy Compd 577, S151S154.Google Scholar
Singleton, M. & Nash, P. (1987). The Ag-Ni (silver-nickel) system. Bull Alloy Phase Diagr 8(2), 119121.Google Scholar
Srivastava, C., Chithra, S., Malviya, K.D., Sinha, S.K. & Chattopadhyay, K. (2011). Size dependent microstructure for Ag-Ni nanoparticles. Acta Mater 59(16), 65016509.Google Scholar
Srivastava, C. & Mundotiya, B.M. (2013). Electron microscopy of microstructural transformation in electrodeposited Ni-rich, Ag-Ni film. Thin Solid Films 539, 102107.Google Scholar
Srivastava, C. & Rai, R.K. (2013). Transmission electron microscopy study of Ni-rich, Ag–Ni nanowires. Chem Phys Lett 575, 9196.Google Scholar