E-resources
-
Duc, N.T.M.; Shen, H.X.; Clements, E.M.; Thiabgoh, O.; Sanchez Llamazares, J.L.; Sanchez-Valdes, C.F.; Huong, N.T.; Sun, J.F.; Srikanth, H.; Phan, M.H.
Journal of alloys and compounds, 10/2019, Volume: 807, Issue: CJournal Article
Gd60Fe20Al20 microwires with an average diameter of ∼44 μm were fabricated by the melt-extraction method. XRD, TEM and HRTEM confirmed the amorphous nature of the microwires. The dimensional and chemical uniformity of the microwires over their length were confirmed by SEM and EDS, respectively. Magnetization measurements revealed a broad paramagnetic to ferromagnetic phase transition at TC ∼202 K. For μ0ΔH = 5 T, the microwires exhibit a broad magnetic entropy change with its maximum value ΔSMmax of ∼4.8 J kg−1 K−1 and a large refrigerant capacity (RC) of ∼687 J kg−1 over a large temperature interval (150 K). This RC value of the microwires is larger than those of the previously reported bulk and ribbon counterparts. An analysis of critical exponents reveals that γ = 1.246 ± 0.017 is close to that predicted by the 3D Ising theoretical model, while β = 0.723 ± 0.011 does not agree with any of the critical exponents predicted by the existing models. This can be attributed to the antiferromagnetic coupling between the rare earth (Gd) and the transition metal (Fe). The origins of the broad magnetic phase transition, the broad magnetic entropy change, and the large refrigerant capacity are discussed. •High-quality amorphous melt-extracted Gd60Fe20Al20 microwires.•Large magnetocaloric effect and refrigerant capacity.•Critical magnetic behavior and complex interactions.•Magnetic refrigerator for nitrogen liquefaction.
Author
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.