Electrical and magnetic properties of γ-Fe2O3epitaxial films

We have investigated electrical and magnetic properties of γ-Fe 2 O 3 (001) epitaxial films. Resistivity of the film was ∼102 flcm at room temperature. The temperature dependent resistivity seemed to follow the three-dimensional variable-range-hopping model. Moreover, ferromagnetic resonance experiment revealed that magnetic anisotropy of cubic and uniaxial terms were -1.3x10 4 and 2.7 x 10 5 erg /cm 3 , respectively. This result is qualitatively consistent with our Mossbauer experiment and magnetization measurements.