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Influence of short time milling in R5(Si,Ge)4, R = Gd and Tb, magnetocaloric materials
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pires, Ana Luíza Resende Belo, João Horta Turcaud, Jeremy Oliveira, G. N. P. Araújo, J. P. Berenov, Andrey Cohen, L. F. Lopes, A. M. L. Pereira, André M. |
| Copyright Year | 2015 |
| Abstract | Abstract The effect of the short milling times on R 5 (Si,Ge) 4 R = Gd, Tb magnetocaloric material properties was investigated. In particular, the effect of milling on atomic structure, particles size and morphology, magnetic, and magnetocaloric effect was studied. With short milling times ( 5 Si 1.3 Ge 2.7 and Tb 5 Si 2 Ge 2 particles size was achieved down to approximately 3.5 μm. For both compositions the main differences are a consequence of the milling effect on the coupling of the structural and magnetic transitions. In the Gd 5 Si 1.3 Ge 2.7 case, a second-order phase transition emerges at high temperatures as a result of ball milling. Consequently, there is a decrease in the magnetocaloric effect of 35% after 150 min of milling. Interestingly, an opposite effect is observed in Tb 5 Si 2 Ge 2 where a 23% increase of the magnetocaloric effect was achieved, driven by the enhancement of the coupling between magnetic and structural transitions arising from internal strain promoted by the milling process. |
| Starting Page | 32 |
| Ending Page | 38 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.matdes.2015.06.099 |
| Volume Number | 85 |
| Alternate Webpage(s) | https://arxiv.org/pdf/1505.02573v1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.matdes.2015.06.099 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
