Magnetic circular dichroism of EuO films

We report on the magnetic circular dichroism (MCD) spectra of EuO thin films having a [200] preferential growth, for
6\deg < T < 300\deg
K under low or high magnetic fields according to the spectral range investigated. A tentative interpretation of the temperature dependence of the spectra is proposed. Zero field spectra have been obtained after previous magnetization of the sample below T
c
; this provides a new method to determine T
c
in zero field.