|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials for Energy and Power Conversion Applications
||Optimisation of Magnetically Hard Pyromagnets
||Karl G. Sandeman, Dominique Givord, Laurent Ranno, Nora M. Dempsey
|On-Site Speaker (Planned)
||Karl G. Sandeman
The pyromagnetic effect is the corollary of the more often-studied magnetocaloric effect, and occurs when a magnetic material changes magnetisation in response to a change of temperature. While it was proposed by Edison and Tesla as a means of producing electricity from heat, the pyromagnetic effect has only recently enjoyed a resurgence of interest due to the discovery of several families of room temperature magnetocaloric effect materials.
Recent studies of pyromagnets have focussed on soft magnetic alloys, and often those that are close to a first order magnetic ordering transition. This presentation addresses the desirable properties of a pyromagnetic material for the conversion of low grade waste heat to power, and examines the pyromagnetic potential of hard magnets. In particular, we seek to understand how the thermal variation of both magnetic anisotropy and saturation magnetisation can be used to maximise the potential efficiency of a thermomagnetic power conversion cycle.
||Planned: Supplemental Proceedings volume