Magnetocaloric effect in rare earth intermetallic compound Er3Al2

Jeebanjyoti, S.; Mohapatra, A.P.; Chelvane, J.A.; Morozkin, A.V.; Chandrasekaran, N.; Pradeep, K.G.; Nirmala, R.

Авторы: Jeebanjyoti Sahoo, Mohapatra Abhaya Prasada, Chelvane J.Arout, Morozkin A.V., Chandrasekaran N., Pradeep K.G., Nirmala R.
Журнал: Journal of Magnetism and Magnetic Materials
Том: 628
Год издания: 2025
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 173156-1
Последняя страница: 173156-5
Номер статьи: 173156
DOI: 10.1016/j.jmmm.2025.173156
Аннотация: Rare earth intermetallic compound Er3Al2 (tetragonal, space group P42/mnm) has been prepared by arc-melting and melt-spinning techniques. In this compound, Er atom has three distinct lattice sites. The arc-melted Er3Al2 sample orders antiferromagnetically at 21 K (TN1), 16 K (TN2) and 10 K (TN3) respectively. The melt-spun Er3Al2 has submicron-sized particles. Transmission electron microscopy data reveal that the melt-spun ErAl2 sample has particles of ~ 73 nm size and the powder X-ray diffraction data yield average crystallite size of about 47 nm. The melt-spun Er3Al2 shows clear antiferromagnetic transition at 10 K. From the magnetization vs field data, isothermal magnetic entropy change (ΔSm) has been estimated. The maximum ΔSm value in the arc-melted Er3Al2 is -8.1 J/kgK at 12 K for 50 kOe field change whereas the corresponding value in the melt-spun sample is -8.3 J/kg at 12 K. It is found that the nature of the transition and the strength of the magnetocaloric effect in melt-spun sample remain almost unaltered when compared to that in bulk.
Добавил в систему: Морозкин Александр Владимирович

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Magnetocaloric effect in rare earth intermetallic compound Er3Al2статья

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