S
S. J. Murray
Researcher at Massachusetts Institute of Technology
Publications - 11
Citations - 1902
S. J. Murray is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Magnetic shape-memory alloy & Magnetization. The author has an hindex of 10, co-authored 11 publications receiving 1827 citations.
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6% magnetic-field-induced strain by twin-boundary motion in ferromagnetic Ni–Mn–Ga
TL;DR: In this paper, a simple model accounts quantitatively for the dependence of strain on magnetic field and external stress using as input parameters only measured quantities, and the strain versus field curves exhibit appreciable hysteresis associated with the motion of the twin boundaries.
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Phenomenology of giant magnetic-field-induced strain in ferromagnetic shape-memory materials (invited)
TL;DR: In this article, the magnetic and crystallographic aspects of the twin-boundary motion responsible for this effect were described, and the authors reasonably well accounted for the field and stress dependence of the strain by minimization of a simple free energy expression.
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Large field induced strain in single crystalline Ni–Mn–Ga ferromagnetic shape memory alloy
TL;DR: In this article, a room temperature free shear strain of 5.7% is reported in a single crystal of Ni-Mn-Ga having a composition close to the Heusler alloy Ni2MnGa.
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Giant magnetic-field-induced strain in Ni-Mn-Ga crystals : experimental results and modeling
TL;DR: In this paper, a thermodynamic model for field-induced twin-boundary motion describes the main features of the field dependence and stress dependence of the strain, which can be measured from experimental stress vs. strain and magnetization vs. field curves.
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Field-induced strain under load in Ni–Mn–Ga magnetic shape memory materials
TL;DR: In this paper, the compressive stress-strain characteristics in variable transverse field were studied in samples selected to have Tc and T0 just below room temperature, as expected and the magnetic field was applied under fixed load for various stresses.