Magnetic properties and large magnetocaloric effect in Ho3Pd2 compound
| Autor: | Y. S. Du, Guang Hui Rao, Jiang Wang, Jianqiu Deng, Zhenmin Du, Cuiping Guo, X.F. Wu |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Magnetic moment Condensed matter physics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic susceptibility Electronic Optical and Magnetic Materials Magnetic field Paramagnetism Magnetization Ferromagnetism 0103 physical sciences Magnetic refrigeration Curie temperature 0210 nano-technology |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 482:168-172 |
| ISSN: | 0304-8853 |
| Popis: | Magnetic transitional behaviors and magnetocaloric effect of the intermetallic compound Ho3Pd2 have been studied. It exhibits a second order magnetic transition from ferromagnetic (FM) to paramagnetic (PM) states at a Curie temperature (TC) of 9.6 K. In the PM region, the magnetic susceptibility of the Ho3Pd2 compound follows the Curie-Weiss law. The paramagnetic Curie temperature (θp) was evaluated to be 5.3 K, and the effective magnetic moment (μeff) to be 10.5 μB/Ho. The positive value of θp indicates the ferromagnetic interactions in the ordering state of Ho3Pd2 and the effective magnetic moment is close to the theoretical value 10.6 μB for the Ho3+ ion, which suggests that the Pd ions in Ho3Pd2 are non-magnetic. Under the magnetic field change of 0–5 T, the maximum magnetic entropy change (−ΔSM) and the refrigerant capacity (RC) for this compound are evaluated to be 18.3 J kg−1 K−1 and 301.5 J kg−1, respectively, with no thermal and field hysteresis loss. |
| Databáze: | OpenAIRE |
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