Magnetic transition and magnetocaloric effect in Nd6Fe13Pd compound
| Autor: | Jiang Wang, X. F. Wu, Changrong Li, Guang Hui Rao, Gang Cheng, L. Ma, Yu Du |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Transition temperature 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetic field Magnetization Paramagnetism Ferromagnetism 0103 physical sciences Magnetic refrigeration Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 0210 nano-technology Néel temperature |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 457:8-12 |
| ISSN: | 0304-8853 |
| Popis: | The crystal structure, magnetic transitional behaviors and magnetocaloric effect were investigated in Nd6Fe13Pd compound. The results show that Nd6Fe13Pd crystallizes in the tetragonal Nd6Fe13Si-type structure (space group I4/mcm) with the lattice parameters a = b = 8.0765 A and c = 22.3747 A and two magnetic transitions from the ferromagnetic to the antiferromagnetic states with Ttr = 173 K and from the antiferromagnetic to the paramagnetic states with the Neel temperature of 369 K occurred in the Nd6Fe13Pd compound. The magnetic transition between the ferromagnetic and the antiferromagnetic states can be induced by either changing temperature or applying a magnetic field with very small thermal and magnetic hystereses and the transition temperature is very sensitive to the applied field. The experimental results indicate a broad working temperature span and negative magnetic entropy changes around Ttr = 173 K. For a magnetic field change of 2 T, the maximum magnetic entropy change −ΔSM reaches to 4.4 J kg−1 K−1 with the corresponding refrigeration capability of about 125 J kg−1. |
| Databáze: | OpenAIRE |
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