| Autor: |
Mitali Madhusmita Prusty, J. Arout Chelvane, A. V. Morozkin, Karanam Gururaj, K. G. Pradeep, P. L. Paulose, R. Nirmala |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
AIP Advances, Vol 12, Iss 3, Pp 035145-035145-4 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2158-3226 |
| DOI: |
10.1063/9.0000358 |
| Popis: |
Laves phase rare earth intermetallic compound ErAl2 (Cubic, MgCu2-type) has been prepared by melt-spinning process. Analysis of powder X-ray diffraction data of melt-spun ErAl2 yields crystallite size of about 54 nm. Transmission electron microscopy image reveals particles of size ∼70 nm. The melt-spun ErAl2 orders ferromagnetically ∼10 K (TC) whereas the ferromagnetic ordering temperature is ∼14 K for the arc-melted ErAl2 compound. From the magnetization vs field data, isothermal magnetic entropy change (ΔSm) has been computed as a function of temperature near TC. The maximum ΔSm value in the melt-spun ErAl2 is ∼ −34 Jkg−1K−1 at 14 K for 70 kOe field change whereas the corresponding value in the arc-melted sample is ∼ −42 Jkg−1K−1 at 16 K. Thus, rapid solidification results in crystalline, coarse grained ErAl2 with submicron sized particles leading to only minor changes in the magnetic and magnetocaloric properties. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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