Investigation on the Magnetocaloric Effect of the Pr7Pd3 Compound
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Magnetic transitional behaviors and the magnetocaloric effect of the intermetallic compound Pr7Pd3 have been studied. A second-order metamagnetic transition between ferromagnetic and paramagnetic states was observed with a Curie temperature (T C) of 14.9 K. The paramagnetic Curie temperature (𝜃 p) and the effective magnetic moment (μ eff) were investigated and determined to be 5.1 K and 3.43 μ B/Pr, respectively. A reversible magnetocaloric effect was observed in this compound originated from the magnetic phase transition. For a magnetic field change of 0–5 T, the maximum magnetic entropy change − ΔS M reached 5.5 J kg− 1 K− 1, and the corresponding value of refrigerant capacity was estimated to be about 65 J kg− 1 with no thermal and field hysteresis loss.
KeywordsRare earth-transition metal compound Magnetization Magnetocaloric
This study was supported by the National Nature Science Foundation of China (Grant No. 51261004) and the National Basic Research Program of China (Grant No 2014CB643703). The authors also acknowledge Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, China (Grant No. 131003-Z).
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