Structural transformations in Mn2NiGa due to residual stress

Singh, Sanjay and Maniraj, M and D'Souza, SW and Ranjan, R and Barman, SR (2010) Structural transformations in Mn2NiGa due to residual stress. In: Applied Physics Letters, 96 (8).

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Abstract

Powder x-ray diffraction study of Mn2NiGa ferromagnetic shape memory alloy shows the existence of a 7M monoclinic modulated structure at room temperature (RT). The structure of Mn2NiGa is found to be highly dependent on residual stress. For higher stress, the structure is tetragonal at RT, and for intermediate stress it is 7M monoclinic. However, only when the stress is considerably relaxed, the structure is cubic, as is expected at RT since the martensitic transition temperature is 230 K.

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.
Keywords:	ferromagnetic materials;gallium alloys;internal stresses; manganese alloys;nickel alloys;shape memory effects;X-ray diffraction
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	11 Jun 2010 08:19
Last Modified:	19 Sep 2010 05:57
URI:	http://eprints.iisc.ac.in/id/eprint/26248

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