The Magnetocaloric Effect of Nonstoichiometric ErM.sub.2Mn.sub.x Compounds

The structure and magnetic and magnetocaloric properties of nonstoichiometric ErM.sub.2Mn.sub.x alloys with M = Ni, Co, and Fe have been studied. ErNi.sub.2Mn.sub.x alloys with x [less than or equal to] 1.25, ErCo.sub.2Mn.sub.x alloys with x [less than or equal to] 0.8, and ErFe.sub.2Mn.sub.x alloys...

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Bibliographic Details
Published in:Physics of metals and metallography 2022-09, Vol.123 (9), p.869
Main Authors: Inishev, A. A, Gerasimov, E. G, Terent'ev, P. B, Gaviko, V. S, Mushnikov, N. V
Format: Article
Language:English
Subjects:
Alloys
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Summary:The structure and magnetic and magnetocaloric properties of nonstoichiometric ErM.sub.2Mn.sub.x alloys with M = Ni, Co, and Fe have been studied. ErNi.sub.2Mn.sub.x alloys with x [less than or equal to] 1.25, ErCo.sub.2Mn.sub.x alloys with x [less than or equal to] 0.8, and ErFe.sub.2Mn.sub.x alloys with x [less than or equal to] 0.4 are shown to solidify with the formation of the cubic MgCu.sub.2-type structure. The magnetocaloric effect of the ErM.sub.2Mn.sub.x compounds is estimated based on magnetic measurements and using the thermodynamic Maxwell's relation. The ErFe.sub.2Mn.sub.0.4 compound is found to demonstrate a plateau-like temperature dependence of the magnetic entropy change over the wide temperature range from 77 to 300 K.
ISSN:0031-918X
DOI:10.1134/S0031918X22090046