Convection can be qualified in terms of being natural, forced, gravitational, granular, or thermomagnetic. Ozoe group has studied thermomagnetic convection both experimentally and numerically. They showed that thermomagnetic convection can be correlated with a dimensionless magnetic Rayleigh number. The thermomagnetic properties of carbon steels at temperatures round the Curie point"". He used the term "thermomagnetic currents" or "thermomagnetism" to express his discovery.