RES4BUILD - Renewables for clean energy buildings in a future power system
Published June 17, 2022 | Version v1
Journal article Open

Virgin effect in spheres of LaFeSi-based alloys

Authors/Creators

  • 1. Department of Energy Conversion and Storage, Technical University of Denmark –DTU,
  • 2. Department of Mechanical Engineering, Technical University of Denmark –DTU,

Description

A virgin phase transition is observed in spherical particles of the industrially relevant magnetocaloric material La(Fe,Mn,Si)13Hy. Upon initial cooling, the phase transition is observed 2–3 K below the heating transition on all subsequent cooling and heating transitions. This virgin transition has been studied using differential scanning calorimetry and vibrating sample magnetometry. Incremental measurements show not only how the phase transition can be carefully approached but also that the initial full transformation requires cooling of about 6 K below the observed phase transformation. No signs of structural damage due to the thermal cycling were observed, neither macroscopically or by scanning electron microscopy.

Notes

This work was, in part, financed by the RES4Build project, which received funding from the European Union's Horizon 2020 Research and Innovation Program, under Grant Agreement No.814865. The data that support the findings of this study are available from the corresponding author upon reasonable request.

Files

DTU_Virgin effect in spheres of LaFeSi-based alloys.pdf

Files (4.3 MB)

Additional details

Funding

European Commission
RES4BUILD - Renewables for clean energy buildings in a future power system 814865