Regensburg 2022 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 29: Caloric Effects in Magnetic Materials

MA 29.2: Vortrag

Donnerstag, 8. September 2022, 09:45–10:00, H47

Magnetocaloric effect in Tb₃Ni studied in high magnetic fields for cryogenic applications — •T. Niehoff^1,2, T. Gottschall¹, C. Salazar Mejia¹, A. Herrero³, A. Oleaga³, A.F. Gubkin⁴, and J. Wosnitza^1,2 — ¹Dresden High Magnetic Field Laboratory (HLD-EMFL), HZDR, Dresden, Germany — ²Technische Universität Dresden, Dresden, Germany — ³Universidad del País Vasco, Bilbao, Spain — ⁴Ekaterinburg, Russia

Tb₃Ni exhibits a large variety of temperature and magnetic-field dependent phase transitions in a temperature range of 3 to 90 K. This gives rise to a very competitive conventional magnetocaloric effect and an inverse magnetocaloric effect at very low temperature. These properties make this material an interesting candidate for magnetic refrigeration applications in the gas liquefaction temperature range. In this work, we present a comprehensive analysis of the magnetocaloric effect in a Tb₃Ni single crystal in pulsed magnetic fields up to 50 T and by heat capacity measurements in static fields.