Hard ferromagnets as a new perspective on materials for thermomagnetic power generation cycles - Archive ouverte HAL Access content directly
Journal Articles Physics Letters A Year : 2023

Hard ferromagnets as a new perspective on materials for thermomagnetic power generation cycles

(1, 2) , (3) , (3) , (4) , (5) , (4) , (6) , (7, 2)
1
2
3
4
5
6
7

Abstract

We consider the ways in which magnetically hard materials can be used as the working materials in thermomagnetic power generation (TMG) cycles in order to expand the area in the magnetisation vs. applied field (M - H) plane available for energy conversion. There are 3 parts to this Perspective. First, experiments on commercially available hard ferrites reveal that, while these materials are not yet good TMG candidates, hard ferromagnets with higher thermal conductivity and a greater change of magnetization with temperature could outperform existing TMG materials. Second, computational results indicate that biasing a soft magnet with a hard ferromagnet is essentially equivalent to shifting the M - H loop by an amount proportional to the field of the biasing magnet. Work outputs under biased conditions show a substantial improvement over unbiased cycles, but experimental verification is needed. Third, we discuss the rationale for exploring artificial spin reorientation materials as novel TMG working materials.
Fichier principal
Vignette du fichier
TMGPaperDraft_v10.pdf (1.26 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03934024 , version 1 (11-01-2023)

Identifiers

Cite

Anthony Tantillo, Alexander Barcza, Volker Zellmann, Morgan Almanza, Vittorio Basso, et al.. Hard ferromagnets as a new perspective on materials for thermomagnetic power generation cycles. Physics Letters A, In press, ⟨10.1016/j.physleta.2023.128632⟩. ⟨hal-03934024⟩
0 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More