OPTICAL AND MAGNETOOPTICAL ANOMALIES FOR IRON ON A STRUCTURED SUBSTRATE

Measurements of the reflectivity and the transverse Kerr effect for sp uttered iron films on flat and structured substrates reveal, for the f irst time, anomalies in both the optical and magneto-optical behaviour of the structured samples. The presence of anomalies in the transvers e Kerr effect measurements, far various orders of diffraction, is much clearer than in those of reflectivity. The results are discussed in t erms of the anticipated Rayleigh condition for optical anomalies and t he condition for the generation of surface plasmons in iron.