Structural behavior and magnetic properties of a Ni–Mn–Ga single crystal across the martensite/austenite two-phase region

Pagounis, E.; Laptev, Aleksej; Szczerba, M.J.; Chulist, R.; Laufenberg, M.

doi:10.1016/j.actamat.2015.02.001

Cited by 11 publications

(1 citation statement)

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“…is firstly examined. This is motivated on the one hand by the influence of the training process on the critical transformation temperatures [20] what then necessities a careful assessment of the thermal behavior of the trained Ni-Mn-Sn in order to ensure an appropriate choice of operating temperatures for strain studies. On the other hand, such an examination contributes valuable information in terms of DS behavior pertinent to ECE.…”

Section: Resultsmentioning

confidence: 99%

Superelastic behavior of a metamagnetic Ni–Mn–Sn single crystal

et al. 2018

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A single-crystalline specimen with the composition of Ni 49.5 Mn 38.4 Sn 12.2 shows a 4.9% recoverable transformation strain upon compressive loading. The critical compressive stress increases with temperature at the step of 5.6 MPa/K, whereas upon cycling it decreases by 18.1 MPa/cycle. The microstructure of the specimen undergoes considerable refinement upon superplastic training; however, it is only able to sustain a limited number of cycles (B 5). Martensite training, resulting in a single-variant microstructure, has a profound influence on the austenite start transformation temperature (DT = 29 K), resulting partially from the dissipation of the elastic strain energy. The Ni-Mn-Sn system is an interesting candidate for multiferroic applications given its mechano-magnetic properties and a huge value of the martensitic transformation entropy change (* 50 J/kg K).

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Section: Resultsmentioning

confidence: 99%