  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.
