Enhanced magnetization of ultrathin NiFe${}_2$O${}_4$ films on SrTiO${}_3$(001) related to cation disorder and anomalous strain

J. Rodewald, J. Thien, K. Ruwisch +3

NiFe${}_2$O${}_4$ thin films with varying thickness were grown on SrTiO${}_3$(001) by reactive molecular beam epitaxy. Soft and hard x-ray photoelectron spectroscopy measurements reveal…