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Magnetization isotherms of and measured in the field increase process. Hatched area marks the area that contributes to entropy change. Numbers in the figure indicate the temperature in units of kelvin.
Temperature-dependent entropy changes of calculated from magnetic data (solid circles) and heat capacity (open circles). The peak value drops from if only the contributions from the metamagnetic transition are considered (marked by an arrow). has been set . Solid lines are guides for the eyes.
Heat capacity of measured under the fields of and .
Schematic diagram showing the calculation of entropy change when stepwise magnetic behaviors occur.
Entropy changes of MnAs under a pressure of . Solid symbols represent the results calculated by the Maxwell relation, and open symbols are the contributions from the metamagnetic transition only. Inset plot shows the magnetization isotherms measured under the pressure of (Ref. 5).
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