Magnetic Moment of Ultrathin Epitaxial Fe3O4 Films on GaAs(100)

The magnetic properties, in particular, the thickness dependence of the magnetization of ultrathin Fe₃O₄ films grown on GaAs(100). The in-plane hysteresis loop from the VSM were measured for samples with various thickness in different field orientation. In the directions of [011 ] and [001 ], the remanence ratio increases with increasing film thickness and more distinctly during the change from 6 to 8 nm, while it drops at the thickness of 8nm in [0-11] direction.