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Temperature dependence of the magnetization with applied field after a zero field cooling (left scale); is the Curie point in the martensite, and is the Curie point in the austenite. DSC curves at endothermic down (right scale). Inset: Electron micrograph showing the polycrystalline nature of the Ni–Mn–Sn sample, grain size, and martensite twinning (lighter/darker bands).
(Color online) Adiabatic temperature changes measured upon the application of magnetic field up to starting from the equilibrium temperature . Inset: A subset of the experimental data points is compared to analytical curves see Eqs. (2) and (3).
(Color online) Field evolution of the adiabatic sample temperature during a field ramp from at different starting temperatures [points: experiment; lines: model of Eqs. (2) and (3)]. Inset: Field evolution of the curves see Eqs. (2) and (3): , , , , and .
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