June 2014

Journal

Structural and Dynamical Fluctuations in Off-Stoichiometric NiMnGa Shape-Memory Alloys

By:
Barabash, Rozaliya I; Barabash, Oleg M; Karapetrova, Evgenia; Manley, Michael E
Journal Name:
Applied Physics Letters
Page Number:
241905
Volume:
104
Issue Number:
24
Publication Date:
June 2014
View DOI Listing:
https://doi.org/10.1063/1.4884062

Abstract

3D diffuse scattering dataset in the temperature region of the existence of high temperature cubic L21 phase reveals localized intensity maxima related to phason modes. Peierls instability – induced tetragonal distortions in the pre-martensitic phase cause strong diffuse scattering. Around (H0H) reflections diffuse scattering is strongly compressed along the [H0H] and enhanced along the [-H0H] direction.


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