Abstract
We show that good quality epitaxial films of magnetic lithium ferrite (both pure and Mn,Zn substituted) can be grown by pulsed laser deposition technique either using a XeCl excimer laser or a Nd-YAG laser. The use of the excimer laser allows to grow films with a better surface morphology. Furthermore, energy dispersive X-ray analysis shows that, for Mn,Zn substituted lithium ferrites, the target composition is well reproduced in the film. The as-grown electrical resistivity (about 10 4 Ωcm −1) and its activation energy are typical of well compensated spinels. A further increase of resistivity and activation energy is obtained by suitable thermal treatments in oxygen atmosphere. However such treatments do not affect the linewidth of the ferromagnetic resonance.
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