| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Rotating Magnetocaloric Effect in Polycrystals: Fundamentals and Applications |
| Author(s) |
Joao Horta Belo, Rafael Almeida, Joćo Esteves de Araśjo, Joćo S. Amaral, Rodrigo Kiefe, Joćo Ventura, Claudia Fernandes, Daniel Silva |
| On-Site Speaker (Planned) |
Joao Horta Belo |
| Abstract Scope |
Magnetic refrigeration devices using the magnetocaloric effect (MCE) offer a potentially cleaner, more efficient and cost-effective alternative to vapor-compression. In contrast with conventional MCE, a rotating magnetocaloric effect (RMCE) consists of a temperature change induced by rotating the magnetic field while maintaining its intensity. RMCE is expected to enable simpler, more compact and more efficient devices than MCE. Until recently, the RMCE was only explored in strong magnetocrystalline anisotropy materials which are costly to obtain. However, last year, our team demonstrated that the demagnetizing effect can act as a source of RMCE in any untextured magnetocaloric sample shaped asymmetrically. Since then, we have explored the temperature and field intensity dependencies of this novel RMCE on bulk and nanostructured magnetocaloric materials presenting 1st and 2nd order phase transitions. As will be detailed, the RMCE is highly competitive with conventional MCE especially for low fields near room temperature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Magnetic Materials, Phase Transformations |