7–10 Sept 2020
Europe/Zurich timezone
20. konference českých a slovenských fyziků

MAGNETIC, MAGNETOCALORIC, THERMAL AND TRANSPORT PROPERTIES OF Gd 3 Ni 2 In 4

10 Sept 2020, 10:50
20m
lecture hall T2 (building A)

lecture hall T2

building A

Speaker

Reiffers M. (Faculty of Humanities and Natural Sciences, Prešov University, Prešov,)

Description

The new polycrystalline intermetallic compound Gd 3 Ni 2 In 4 has been prepared. We have
investigated the structural, magnetic, magnetocaloric, thermodynamic and transport
properties. X-ray powder diffraction pattern displays that Gd 3 Ni 2 In 4 crystallizes in hexagonal
Lu 3 Co 2 In 4 – type of crystal structure. The presence of two magnetic transitions,
antiferromagnetic T N = 21 K and ferromagnetic T C at 55.5 K was observed in magnetization
studies. The maximal value of magnetic entropy change, -ΔS M , determined from isothermal
magnetization data in a magnetic field of 9 T is 4.57 J/kg K, which is spread over a wide
temperature range (ΔT = 61.5 K) and hence it yields to a relative cooling power (RCP) of 281
J/kg. In addition, the compound shows a significant positive magnetoresistance, MR (T = 2
K) = 44 % in magnetic field B = 9 T. Taking into account these results one could conclude
that Gd 3 Ni 2 In 4 compound is exhibiting successive reversible magnetic transitions. Thus, it may
comprise a distinct class of magnetocaloric materials as they work in a wider temperature
range than conventional refrigerant materials.

Primary author

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