| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Influence of Applied Magnetic Field on the Nature of First-Order Phase Transformations in R2In Cryogenic Magnetocaloric Materials |
| Author(s) |
Ajay Kumar, Anis Biswas, Yaroslav Mudryk |
| On-Site Speaker (Planned) |
Yaroslav Mudryk |
| Abstract Scope |
Giant magnetocaloric effect [1] is associated with the first-order magnetic transformations (FOMT) and strong coupling of magnetic and atomic lattices. Understanding the fundamental response of such transformations to applied magnetic field is crucial for the design of magnetocaloric materials, which may react to strong magnetic fields in profoundly different manner. For example, Gd5Si2Ge2 retains its characteristic FOMT even at 10 T [1]. On the other hand, the R2In compounds (R= Eu, Pr, Nd) are known for their anhysteretic and rather weak FOMTs, and the mean-field theory predictions indicate that the transition in Eu2In should become second order in a moderate magnetic field of >2.5 T [2]. Here we present the results of an experimental study of the influence of applied magnetic field on the FOMT in R2In compounds.
[1] V.K.Pecharsky, K.A.Gschneidner, Jr. Phys. Rev. Lett 78 (1997) 4494.
[2] B.P. Alho et al., Phys. Rev. B 102 (2020) 124425. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Phase Transformations, |