Signature of martensite transformation on conductivity noise in thin films of NiTi shape memory alloys

Chandni, U and Ghosh, Arindam and Vijaya, HS and Mohan, S (2008) Signature of martensite transformation on conductivity noise in thin films of NiTi shape memory alloys. In: Applied Physics Letters, 92 (11). 112110:1-3.

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Abstract

Slow time-dependent fluctuations, or noise, in the electrical resistance of dc magnetron sputtered thin films of nickel-titanium shape memory alloys have been measured. Even in equilibrium, the noise was several orders of magnitude larger than that in simple diffusive metallic films and was found to be nonmonotonic around the martensitic transformation regime. The results are discussed in terms of the dynamics of structural defects, which also lay the foundation to a new noise-based characterization scheme of martensite transformation.

Item Type:	Journal Article
Publication:	Applied Physics Letters
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics Division of Physical & Mathematical Sciences > Physics
Date Deposited:	28 Apr 2008
Last Modified:	19 Sep 2010 04:44
URI:	http://eprints.iisc.ac.in/id/eprint/13794

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