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
Citations
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Orientation relationship between austenite and non-modulated martensite in Ni–Mn–Ga single crystals
TL;DR: In this paper, in-situ electron back scatter diffraction experiments were used to accurately determine the orientation relationships between austenite and martensite in non-modulated Ni-Mn-Ga single crystals.
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Direct observation of fast-moving twin boundaries in magnetic shape memory alloy Ni–Mn–Ga 5 M martensite
TL;DR: In this article, the authors reported a direct observation of fast Type II twin boundary motion under a pulsed magnetic field excitation in Ni-Mn-Ga 5-M martensite, utilizing high-speed camera technique.
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Magnetomechanical Four‐State Memory
TL;DR: In this article, the magnetic poles collect within the indentation, which is leveraged to control the magnetic stray field for the patterning of magnetic information, and four magnetic-based memory states are possible due to magnetic field or stress-induced twin rearrangement along two crystal orientations, each with two possible magnetic orientations.
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Ferromagnetic shape memory flapper for remotely actuated propulsion systems
TL;DR: In this paper, a NiMnGa shear actuation method is proposed for small-scale fluid propulsion. But the authors focus on the engineering shear strain and twin boundary velocity, which are the two key parameters for powerful propulsion.
Journal ArticleDOI
The exploration of the effect of microstructure on crackling noise systems
TL;DR: In this article, the authors analyzed uniaxial compression loading curves of two different physical systems that exhibit jerky behavior: a martensitic NiMnGa single crystal and a stack of corrugated fiberboards.
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.