The important finding on exceptionally small Young modulus of Ni-Mn-Ga has been summarized in our new publication in Acta Materialia:
Cejpek, P., Drozdenko, D., Mathis, K., Colman, R. H., Dopita, M., Straka, L., & Heczko, O. (2023). Exceptionally small Young modulus in 10M martensite of Ni-Mn-Ga exhibiting magnetic shape memory effect. Acta Materialia, 257, 119133.
https://doi.org/10.1016/j.actamat.2023.119133
The finding reveals the specific instability of the martensite lattice of the material and the physical mechanisms behind it and the magnetic shape memory effect. From the practical point of view, the low modulus can be exploited for an efficient storage of elastic energy.