Both the magnetic and crystallographic microstructures in the ferromagnetic shape memory alloy Ni51Fe22Ga27 were extensively studied by electron holography, electron diffraction, dark-field image observations, and the phenomenological crystallographic theory of martensitic transformations. This study elucidated anomalies that were observed in the magnetic flux pattern before the onset of the martensitic transformation. Furthermore, the observations clarified the relationship between the magnetization vectors and the shape strain directions in the martensite variants that formed a self-accommodation group.
ASJC Scopus subject areas
- Physics and Astronomy(all)