Artículo
Impact of structural disorder on the magnetic ordering and magnetocaloric response of amorphous Gd-based microwires.
Autor/es | Biswas, Anis
Yu, Yikyung Bingham, Nicholas S. Wang, Huan Qin, Faxiang Sun, Jianfei Yu, Seongho Franco García, Victorino Srikanth, Hariharan Phan, Manh Huong |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2014 |
Fecha de depósito | 2016-01-28 |
Publicado en |
|
Resumen | We have studied the impact of structural disorder on the magnetic ordering and magnetocaloric
response of amorphous Gd
68
Ni
32
and Gd
53
Al
24
Co
20
Zr
3
microwires. We find that the presence of
structural ... We have studied the impact of structural disorder on the magnetic ordering and magnetocaloric response of amorphous Gd 68 Ni 32 and Gd 53 Al 24 Co 20 Zr 3 microwires. We find that the presence of structural disorder significantly broadens the paramagnetic to ferromagnetic (PM-FM) transition and the temperature-dependent magnetic entropy change, while the nature of the second-order magnetic transition and long-range ferromagnetic order are not essentially affected by this effect. The large magnetic moment of Gd and the presence of the long-range ferromagnetic order are believed to result in a large magnetic entropy change, which together with the broadening of the PM-FM transition due to structural disorder contribute to a large refrigerant capacity. The excellent magnetocaloric properties of the amorphous microwires make them very promising candidates for active magnetic refrigeration. |
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