Nirmala, R. ; Morozkin, A.V. ; Rajivgandhi, R. ; Nigam, A.K. ; Quezado, S. ; Malik, S.K. (2016) Metamagnetism-enhanced magnetocaloric effect in the rare earth intermetallic compound Ho5Ge4 Journal of Magnetism and Magnetic Materials, 418 . pp. 118-121. ISSN 0304-8853
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Official URL: http://doi.org/10.1016/j.jmmm.2016.03.039
Related URL: http://dx.doi.org/10.1016/j.jmmm.2016.03.039
Abstract
Magnetic and magnetocaloric properties of polycrystalline Ho5Ge4 (orthorhombic, Sm5Ge4-type, Space group Pnma, No. 62, oP36) compound have been studied. This compound orders antiferromagnetically at ~24 K (TN). From the magnetization vs field isotherms obtained close to the magnetic transition temperature, magnetocaloric effect (MCE) has been estimated. The isothermal magnetic entropy change (ΔSM) reaches a maximum value of ~−27 J/kg-K at ~30 K for a field change of 140 kOe. A metamagnetic transition is observed in the field dependent magnetization data at temperatures below 20 K, for critical fields above 20 kOe, giving rise to a ferromagnetic order and hence a large MCE. The magnetic moment value at 2.5 K is ~8μB/Ho3+ in 90 kOe field.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 132404 |
| Deposited On: | 16 Dec 2022 05:19 |
| Last Modified: | 16 Dec 2022 05:19 |
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