Anomalous Ettingshausen effect in iron-carbon alloys

Ren Nagasawa; Koichi Oyanagi; Takamasa Hirai; Rajkumar Modak; Satoru Kobayashi; Ken-ichi Uchida

doi:10.1063/5.0103248

Anomalous Ettingshausen effect in iron-carbon alloys

Materials Science 2022-08-24 v2

Authors: Ren Nagasawa , Koichi Oyanagi , Takamasa Hirai , Rajkumar Modak , Satoru Kobayashi , Ken-ichi Uchida

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We have investigated the anomalous Ettingshausen effect (AEE) in iron-carbon alloys, i.e., cast irons and steel, using the lock-in thermography. All the alloys exhibit the clear AEE-induced temperature modulation, and their anomalous Ettingshausen coefficient is an order of magnitude greater than that of the pure iron at room temperature. The dimensionless figure of merit for AEE in the ductile cast iron is 55 times greater than that in the pure iron owing to the significant increase of the anomalous Ettingshausen coefficient. Our result reveals a potential of iron-carbon alloys as transverse thermoelectric materials, although the composition and microstructures optimizations are necessary.

Keywords

anomalous ettingshausen effect iron-carbon alloys cast iron steel lock-in thermography transverse thermoelectric materials

Cite

@article{arxiv.2206.07322,
  title  = {Anomalous Ettingshausen effect in iron-carbon alloys},
  author = {Ren Nagasawa and Koichi Oyanagi and Takamasa Hirai and Rajkumar Modak and Satoru Kobayashi and Ken-ichi Uchida},
  journal= {arXiv preprint arXiv:2206.07322},
  year   = {2022}
}

Comments

15 pages, 4 figures

Anomalous Ettingshausen effect in iron-carbon alloys

Abstract

Keywords

Cite

Comments

Related papers