Abstract
In this paper, we report the magnetic, heat capacity and magneto-caloric effect (MCE) of amorphous Gd7Ru3 compound. Both, temperature dependent magnetization and heat capacity data reveals that two transitions at 58 K and 34 K. MCE has been calculated in terms of isothermal entropy change (ΔSM) and adiabatic temperature change (ΔTad) using the heat capacity data in different fields. The maximum values of ΔSM and ΔTad are 21 Jmol−1K−1 and 5 K respectively, for field change of 50 kOe whereas relative cooling power (RCP) is ∼735 J/kg for the same field change.
Highlights
Magnetocaloric refrigeration and power generation are amongst the latest solid-based refrigeration technologies used for cryogenic applications and an ideal substitute for the existing gas-based refrigeration in terms of environmentally benign, adaptability and efficiency
Giant magnetocaloric effect (GMCE) exhibited by many intermetallic compounds render them as potential refrigerants for magnetic refrigerators.[1,2,3,4]
Large value of MCE spreads over a wide temperature range is considered as one of the most important requirements of a practical magnetic refrigerant system
Summary
Temperature dependent magnetization and heat capacity data reveals that two transitions at 58 K and 34 K. MCE has been calculated in terms of isothermal entropy change (∆SM) and adiabatic temperature change (∆Tad) using the heat capacity data in different fields. The maximum values of ∆SM and ∆Tad are 21 Jmol−1K−1 and 5 K respectively, for field change of 50 kOe whereas relative cooling power (RCP) is ∼735 J/kg for the same field change.
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