A1 Journal article (refereed), original research

Direct and indirect measurements of the magnetic and magnetocaloric properties of Ni0.895Cr0.105MnGe1.05 melt-spun ribbons in high magnetic fields


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Publication Details
Authors: Aryal A., Koshkid'ko Y., Dubenko I., Sánchez-Valdés C., Sánchez Llamazares J., Lähderanta E., Pandey S., Granovsky A., Cwik J., Stadler S., Ali N.
Publisher: Elsevier
Publication year: 2019
Language: English
Related Journal or Series Information: Journal of Magnetism and Magnetic Materials
Journal name in source: Journal of Magnetism and Magnetic Materials
Volume number: 488
ISSN: 0304-8853
eISSN: 1873-4766
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication

Abstract

We report the magnetic and magnetocaloric properties of rapidly solidified Ni0.895Cr0.105MnGe1.05 melt-spun ribbons studied by both direct (adiabatic temperature change) and indirect (isothermal magnetic entropy change) methods in intermediate and high magnetic fields up to 10 T. The maximum values of the adiabatic temperature changes (ΔTad) and magnetic entropy changes (ΔSM" role="presentation" style="display: inline-block; line-height: normal; font-size: 16.2px; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border-width: 0px; border-style: initial; position: relative;">ΔSM) were found to be ∼2.6 K (µoH = 10 T) and 4.4 J kg−1 K−1 (µoΔH = 5 T), respectively, near the Curie temperature (TC). The ΔTad curves and magnetization isotherms were found to be completely reversible, which indicates the high degree of reversibility of the MCEs in this system. A large temperature span (of about 61 K) and a non-saturating behavior of ΔTad were observed at magnetic fields up to 10 T. The adiabatic temperature change was found to be a linear function of (µoH)2/3 near TC, in accordance with the Landau theory of phase transitions.


Last updated on 2020-20-03 at 10:03