J. Phys. IV France 07 (1997) C1-277-C1-278
The Photomagnetoelectric Effect Dependencies on the Magnetic Field in the Ferromagentic CdCr2Se4G.N. Sever and S.Yu. Yuseena
Department of Physics, Moscow Lomonosov State University, Moscow 119899, Russia
The experimental results of the photomagnetoelectric effect (PMEE) dependencies on the magnetic field H for film samples (d~ 10-5 sm) of chalcogenide spinel CdCr2Se4 (Curie point Tc~ 129 K) are presented in this work. The measurements of the PMEE have been conducted at different H (to 14 kOe) and temperature T (83-293 K). An analysis of the PMEE short-circuit current dependencies on H at different T and comparison with magnetic properties of the compound CdCr2Se4 show that in the ferromagnetic region the PMEE consists of the PMEE, which takes place at small H, and the PMEE, which is proportional to the external H. At Curie temperature the spontaneous effect disappears. In the far paramagnetic region exists only the ordinary PMEE. In the general case, the PMEE may be presented as sum of the ordinary PMEE, which is proportional to the magnetic induction B, and the anomalous PMEE, which is proportional to the magnetisation M, as in case of Hall-effect in ferromagnetics.
© EDP Sciences 1997