Conduction-electron spin resonance in aluminium by means of a reflection spectrometer at 60 GHz

Conduction-electron spin resonance in thin aluminium platelets, coated with a plastic surface layer, has been studied in a reflection spectrometer at 60 GHz. It is shown that the data on linewidth and g-factor fall in line with recent measurements at 21 GHz by the present authors and partly also with earlier measurements at 1.27 GHz 9.27 GHz, 35 GHz and 79 GHz by others.