Published January 28, 2016
| Version v1
Publication
Impact of structural disorder on the magnetic ordering and magnetocaloric response of amorphous Gd-based microwires.
Description
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.
Additional details
Identifiers
- URL
- https://idus.us.es/handle/11441/33516
- URN
- urn:oai:idus.us.es:11441/33516