Structural and Dynamical Fluctuations in Off-Stoichiometric NiMnGa Shape-Memory Alloys
- ORNL
- University of Illinois, Urbana-Champaign
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.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1134651
- Journal Information:
- Applied Physics Letters, Vol. 104, Issue 24; ISSN 0003--6951
- Country of Publication:
- United States
- Language:
- English
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