OPTICAL-ABSORPTION AND FARADAY-ROTATION OF BARIUM HEXAFERRITE FILMS PREPARED BY LASER-ABLATION DEPOSITION

The Faraday rotation and optical absorption of the Co-and Ti-substitut ed barium hexaferrite thin films measured in the 500-2000 nm wavelengt h range at room temperature are presented together with the results of the Faraday rotation measurements carried out on selected samples at 80 K. The spectral dependences of the Faraday coefficient are describe d and interpreted using a set of optical electron transitions belongin g to either cobalt or iron cations occupying the tetrahedral and/or oc tahedral positions in the spinel blocks of hexagonal ferrite crystal l attice. (C) 1997 Elsevier Science Ltd. All rights reserved.