Journal ArticleDOI
Large magnetic‐field‐induced strains in Ni2MnGa single crystals
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TLDR
In this paper, the superelastic motion of twin boundaries in the martensitic phase of Ni2MnGa with magnetic fields of 8 kOe applied at 265 K was found to be associated with the staining.Abstract:
Strains of nearly 0.2% have been induced along [001] in unstressed crystals of Ni2MnGa with magnetic fields of 8 kOe applied at 265 K. These stains are associated with the superelastic motion of twin boundaries in the martensitic phase that is stable below about 274 K.read more
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Stress- and magnetic-field-induced variant rearrangement in Ni-Mn-Ga single crystals with seven-layered martensitic structure
TL;DR: In this paper, the influence of magnetic field on stress-strain curves and temperature dependencies of de-twinning stress in cubic-7M martensitic transformation was studied.
Journal ArticleDOI
Effect of temperature on magnetic properties of Ni-Mn-Ga magnetic shape memory (MSM) alloys
Oleg Heczko,K. Ullakko +1 more
TL;DR: In this article, a single crystal Ni/sub 48/Mn/sub 31/Ga/sub 21/ magnetic shape memory alloy was studied as a function of field and temperature, and the observed changes of magnetization curves suggest that the large MSM effect strongly decreases with temperature and about 50 deg below the martensitic transformation vanishes entirely.
Journal ArticleDOI
On the microstructural origins of martensitic transformation arrest in a NiCoMnIn magnetic shape memory alloy
Nickolaus M. Bruno,D. Salas,S.J. Wang,Igor V. Roshchin,Rubén Santamarta,Raymundo Arroyave,Thien Duong,Y.I. Chumlyakov,Ibrahim Karaman +8 more
TL;DR: In this paper, the effect of secondary annealing heat treatments on the martensitic transformation arrest in Ni45Co5Mn36.6In13.4 meta-magnetic shape memory alloy (MMSMA) single crystals was investigated using TEM.
Journal ArticleDOI
Sintering regimes and resulting microstructure and properties of binder jet 3D printed Ni-Mn-Ga magnetic shape memory alloys
TL;DR: In this paper, Binder jet 3D printing was used to produce magnetic shape memory alloy samples with densities increasing from 45% to 99% with increasing sintering temperature from 1000°C to 1100°C for 2
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In situ studies of the martensitic transformation in epitaxial Ni–Mn–Ga films
TL;DR: In this article, temperature dependent atomic force microscopy (AFM), X-ray, magnetization and resistivity measurements are performed in situ, during martensitic transformation of a 500nm thick film.
References
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Ferromagnetic materials
TL;DR: In this paper, the authors restrict their attention to the ferrites and a few other closely related materials, which are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present.