Giant Magnetocaloric Effect in the Region of Magnetic Phase Transition in Mn(As,Sb)статья
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Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
Аннотация:The MCE in MnAs and doped Mn(As,Sb) compounds with low concentration of Sb has
been studied by direct investigation. It was shown that for MnAs the maximum value of MCE is ∆T =
0.28 K on heating (at 308 K) and ∆T = 0.88 K on cooling (at T = 306 K) in magnetic filed 12.5 kOe.
In doped Mn(As,Sb) compounds the temperature dependence of MCE is similar to MnAs. All
investigated compounds demonstrate a strong temperature and field hysteresis of magnetic properties
in magnetic field less than 40 kOe. It was established that a small concentration of Sb leads to
decrease of MCE hysteresis and preserves the phase transition at room temperature region.