Abstract
Magnetic thin films of Mn-ferrite (MnFe2O4) have shown a large perpendicular magnetic anisotropy by the evaporation method. The evaporation substances are the (AαBβ)100-xCx system, where A, B and C represent the matrix elements of combination for Mn, Fe and Bi, respectively. For (Mn25Fe75)97Bi3 the pillar-shaped grain, MnFe2O4 deposited onto substrate has an anisotropy constant of 4.4 × 105 erg/cm3, 4πMs 1.6 × 103 gauss and Hs 540 Oe. The configuration and magnetic properties in evaporated film composition are closely related. It was recognized that in order to get magnetic thin films with perpendicular anisotropy it is important to form a first layer of Bi phase with <102> configuration onto substrates.
