Abstract
Abstract In this paper, GdFeO3 thin films with high orientation and heavily Ce3+ doping were deposited by radio frequency magnetron sputtering with a matching substrate. The effects of substrates and Ce3+ doping on the structure, magnetic and magneto-optical properties of thin films were investigated. As a result, Ce3+ doping can not only increase the saturation magnetization but also greatly enhance the magnetic circular dichroism signals of Ce:GdFeO3 thin films. Based on the density functional theory calculation, it can be found that the probability of electron transition between Ce3+ 4f and Fe3+ 3d and the difference in the absorption of right and left circularly polarized light increase, which results in the strong magneto-optical effect of Ce:GdFeO3/STO thin films.
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