Applied Physics Letters · 2013 · 83 citations · 27 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsMaterials ThermodynamicsPhase TransformationsAntiferromagnetismFerromagnetic MaterialsFerromagnetismMagnetic Properties Of SolidsMagnetism Of Inorganic CompoundsMagnetocaloric MaterialsAdiabatic Temperature ChangeMagnetic EntropyMagnetic Entropy ChangeMagnetic Phase TransitionsMagnetic PropertiesMagnetic RefrigerationMagnetocaloric EffectRefrigerant Capacity
The magnetic properties and magnetocaloric effect in TmGa compound are investigated. TmGa exhibits two successive magnetic transitions: ferromagnetic-antiferromagnetic at TFA = 12 K and antiferromagnetic-paramagnetic transition at TN = 15 K. Under field changes of 1 and 2 T, giant reversible values of magnetic entropy change (12.9 and 20.6 J/kg K) and large values of refrigerant capacity (69 and 149 J/kg) are observed, respectively. Additionally, the maximal values of adiabatic temperature change are 3.2 and 5 K for field changes of 1 and 2 T, respectively. The TmGa compound with excellent magnetocaloric effect is expected to have effective applications in low temperature magnetic refrigeration.
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