1. Non-stoichiometric ErFe2Mnx compounds: Structure, magnetic, magnetoelastic and magnetothermal properties.
- Author
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Inishev, A.A., Gerasimov, E.G., Bartashevich, A.M., Terentev, P.B., Gaviko, V.S., and Mushnikov, N.V.
- Subjects
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NONSTOICHIOMETRIC compounds , *MAGNETIC anisotropy , *MAGNETOCALORIC effects , *MANGANESE alloys , *MAGNETIC moments , *MAGNETIC entropy , *FERRIMAGNETIC materials - Abstract
Crystal structure, magnetostriction, magnetic and magnetothermal properties have been studied for novel non-stoichiometric ErFe 2 Mn x (0 ≤ x ≤ 0.6) compounds. It has been found that for х ≤ 0.4 the compounds crystallize with MgCu 2 -type structure. Curie temperature and magnetic moment values decrease with manganese alloying. Molecular field coefficients have been calculated within ferrimagnetic two-sublattice molecular field model. Magnetic and heat capacity measurements have been used to calculate magnetocaloric effect in a wide temperature range. It has been demonstrated that increasing the Mn content in ErFe 2 Mn x leads to a significant increase (up to 39 %) of anisotropic magnetostriction value at 77 K in magnetic field of 18 kOe. At the same time, the value of effective magnetocrystalline anisotropy decreases. Thus, manganese alloying opens new way for tuning magnetocrystalline anisotropy and magnetostriction in Laves phase compounds. [Display omitted] • single phase non-stoichiometric ErFe 2 Mn х compounds are formed up to Mn concentration x = 0.4. • ErFe 2 Mn х compounds with x ≤ 0.2 have the compensation temperatures at М (Т) curves. • Curie temperature and magnetic moment values decrease with manganese alloying. • The value of anisotropic magnetostriction significant increase with increasing the Mn content. • The value of effective magnetocrystalline anisotropy decreases with increasing the Mn content. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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