Influence of the martensitic transformation kinetics on the magnetocaloric effect in Ni-Mn-In
| العنوان: | Influence of the martensitic transformation kinetics on the magnetocaloric effect in Ni-Mn-In |
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| المؤلفون: | Andreas Taubel, Oliver Gutfleisch, A. Y. Karpenkov, Semih Ener, Franziska Scheibel, Tino Gottschall, Lukas Pfeuffer, Tom Faske, Konstantin P. Skokov |
| المصدر: | arXiv:2101.00840 [cond-mat.mtrl-sci]: https://arxiv.org/abs/2101.00840 Physical Review Materials Physical Review Materials 4(2020), 111401(R) |
| بيانات النشر: | American Physical Society (APS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Austenite, Condensed Matter - Materials Science, Annihilation, Materials science, Physics and Astronomy (miscellaneous), Condensed matter physics, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Magnetic field, Hysteresis, Diffusionless transformation, Martensite, 0103 physical sciences, Magnetic refrigeration, General Materials Science, 010306 general physics, 0210 nano-technology, Adiabatic process |
| الوصف: | The inverse magnetocaloric effect in Ni-Mn based Heusler compounds occurs during the magnetostructural transition between low-temperature, low-magnetization martensite and high-temperature, high-magnetization austenite. In this study, we analyze the metamagnetic transformation of a Ni49.8Mn35In15.2 compound by simultaneous adiabatic temperature change ΔTad and strain Δl/l0 measurements in pulsed magnetic fields up to 10 T. We observe a ΔTad of −10 K and a Δl/l0 of −0.22% when the reverse martensitic transition is fully induced at a starting temperature of 285 K. By a variation of the magnetic field-sweep rates between 316, 865, and 1850 T s−1, the transitional dynamics of the reverse martensitic transformation have been investigated. Our experiments reveal an apparent delay upon the end of the reverse martensitic transformation at field rates exceeding 865 T s−1 which is related to the annihilation of retained martensite. As a consequence, the field hysteresis increases and higher fields are required to saturate the transition. In contrast, no time-dependent effects on the onset of the reverse martensitic transformation were observed in the studied field-sweep range. Our results demonstrate that kinetic effects in Heusler compounds strongly affect the magnetic cooling cycle, especially when utilizing a multicaloric “exploiting-hysteresis cycle” where high magnetic field-sweep rates are employed. |
| وصف الملف: | application/pdf |
| تدمد: | 2475-9953 |
| DOI: | 10.1103/physrevmaterials.4.111401 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeda9d8ed1f914ec5be0b1c0677dbbe6 https://doi.org/10.1103/physrevmaterials.4.111401 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....eeda9d8ed1f914ec5be0b1c0677dbbe6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24759953 |
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| DOI: | 10.1103/physrevmaterials.4.111401 |