The enhanced magnetocaloric effect in Dy2In1−Al by a non-hysteresis metamagnetic phase transition
| Autor: | Fulong Wei, Xiaowei Yin, Weibin Cui, Guiquan Yao, Qiang Wang, Xiaomeng Fan, Jinsong Zhang |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Phase transition Magnetic measurements Materials science Condensed matter physics Hexagonal crystal system Mechanical Engineering Metals and Alloys Lattice distortion 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Mechanics of Materials 0103 physical sciences Magnetic refrigeration Magnetic phase transition General Materials Science Orthorhombic crystal system 0210 nano-technology |
| Zdroj: | Scripta Materialia. 167:37-40 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2019.03.029 |
| Popis: | To enhance the magnetocaloric effect of the second-order magnetic phase transition is eagerly sought in the development of practical magnetic refrigeration technology. Here, demonstrated by Dy2In1−xAlx (0 ≤ x ≤ 0.5) system, the max magnetic entropy change is significantly enhanced to 13.4 Jkg−1 K−1 in Dy2In0.7Al0.3 and 10.8 Jkg−1 K−1 in Dy2In0.6Al0.4 alloys compared with 8.8 Jkg−1 K−1 in Dy2In through a field-induced metamagnetic phase transition, which is unconventionally of nonhysteresis confirmed by magnetic measurements. Considering that nonhysteresis metamagnetic transition occurs at the critical composition where hexagonal structure is formed for x ≤ 0.3 while orthorhombic structure for x ≥ 0.4, the origin is ascribed to the lattice distortion. |
| Databáze: | OpenAIRE |
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