DC pole | Wartość | Język |
dc.contributor.author | Oboz, Monika | - |
dc.contributor.author | Śmiadecki, Z. | - |
dc.contributor.author | Zajdel, Paweł | - |
dc.date.accessioned | 2021-11-23T13:43:49Z | - |
dc.date.available | 2021-11-23T13:43:49Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | "Journal of Magnetism and Magnetic Materials" (2021), Vol. 0, art. no. 168829, s. 1-25 | pl_PL |
dc.identifier.issn | 0304-8853 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/21967 | - |
dc.description.abstract | We investigated the influence of microstructural changes on the magnetic properties and the
magnetocaloric response of the Gd7-xYxPd3 (2 ≤ x ≤ 6) alloys rapidly quenched by vacuum suction
casting (rc-cast samples) and melt-spinning (melt-spun samples) techniques. Quenched-in structural
disorder determines magnetic and magnetocaloric properties in both series of alloys. For the rc-cast
samples two distinct magnetic transitions are visible. The peak at higher temperatures is related to
the ferromagnetic/paramagnetic transition of the crystalline phase. In contrast, the peak observed at
low temperatures is believed to be related to the ferro-para transition of the amorphous phase and/or
a spin reorientation. The Gd7-xYxPd3 alloys in the form of rapidly cooled cast exhibit the magnetic
transition temperatures at 262 K, 242 K, 202 K, 153 K and 9 K, for 2 ≤ x ≤ 6 respectively. Curie
temperatures of the melt-spun Gd7-xYxPd3 alloys are much lower compared to the rc-cast samples.
The melt-spun Gd5Y2Pd3 orders ferromagnetically below 90 K, while Gd4Y3Pd3, Gd3Y4Pd3,
Gd2Y5Pd3 and GdY6Pd3 ribbons undergo the magnetic transformation at 65 K, 40 K, 25 K, and 9 K,
respectively. Investigated ribbons exhibit almost doubled magnetic entropy change in comparison to
the rc-cast samples. For instance, the -ΔSm value for melt-spun and rc-cast Gd5Y2Pd3 is equal to
6.31 Jkg-1K-1 and 3.64 Jkg-1K-1, respectively. Moreover, due to the large δTFWHM of the magnetic
entropy change peak, both the melt-spun and rc-cast samples exhibit large relative cooling power
(RCP), reaching 466 Jkg-1 (Δμ0H = 5 T) for the rc-cast Gd5Y2Pd3. RCP values are comparable to
those of some potential magnetic refrigerants. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | intermetallics | pl_PL |
dc.subject | melt-spun ribbon | pl_PL |
dc.subject | magnetic properties | pl_PL |
dc.subject | magnetic entropy change | pl_PL |
dc.subject | refrigerant capacity | pl_PL |
dc.title | Tuning the magnetocaloric response of Gd7-xYxPd3 (2 ≤ x ≤ 6) alloys by microstructural modifications | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1016/j.jmmm.2021.168829 | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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