In the present study, we conducted experiments for thermo-magnetic natural convection of TSMF by applying uniform magnetic field in a cubic cavity. This study focused on the heat transfer and flow characteristics of thermo-magnetic natural convection with non-magnetic particles. From experimental results, it was found that heat transfer was enhanced with imposing an external magnetic field when the non-magnetic particles are immersed in the thermo-magnetic natural convection. It was realized that the heat transfer characteristics of the thermo-magnetic natural convection with non-magnetic particles depend on the intensity of magnetic field, size and number of the particles immersed in the convection.