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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Materials Engineering of Soft Magnets for Power and Energy Applications
Presentation Title Direct Measurement of the Magnetocaloric Effect in NiMnIn Ribbons
Author(s) Christian Omar Aguilar, Pablo Alvarez-Alonso, Daniel Salazar, Horacio Flores-Z˙˝iga, Volodymyr Chernenko
On-Site Speaker (Planned) Christian Omar Aguilar
Abstract Scope Magnetic shape memory alloys (MSMAs) are unique materials thanks to large changes in their magnetic properties induced by the martensitic transformation. These changes are at the origin of high magnetocaloric responses, whereby these alloys have attracted much attention due their potential use in magnetic refrigeration. We studied Ni<sub>50</sub>Mn<sub>35</sub>In<sub>15</sub> alloys melt-spun at different wheel speeds (10, 20, 30, 40, and 50 m/s) to analyse the impact of the cooling rate on the structure, magnetic and magnetocaloric properties. We have studied the magnetocaloric effect (MCE) associated to both the MT and the magnetic phase transition in the austenite phase by estimating the magnetic entropy change ΔS<sub>M</sub> from magnetization measurements, and measuring directly the field-induced adiabatic temperature change, ΔT<sub>ad</sub>. Ribbons present a conventional MCE (ΔT<sub>ad</sub>~2.2 K at ΔH=19 kOe for v=10 m/s) as a consequence of the ferro-to-paramagnetic transition in the austenite phase, and inverse ΔT<sub>ad</sub> ~-1.1 K under ΔH=19 kOe at MT.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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Development of Fe-based Bulk Metallic Glasses with Both High Saturation Flux Density and High Glass Forming Ability
Development of Mold Inductor for Power Conversion System
Direct Measurement of the Magnetocaloric Effect in NiMnIn Ribbons
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Effects of Cooling Rate on 6.5% Silicon Steel Ordering
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Structure-Processing-Property Relationships in High Temperature Nanocomposite Soft Magnets
Study of Temperature Dependent Magnetic Properties of Zr+4 and Ti+4 Substituted Cobalt Ferrites
Unique Magnetostriction of Fe68.8Pd31.2 Attributable to De-twinning Mechanism

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