Magnetic Properties of the Bi6Fe2Ti3O18 Aurivillius Phase Prepared by Hydrothermal Method
The multiferroic Aurivillius phases in the Bi-Fe-Ti-O system are built from alternate (Bi2O2)2+ and (Bin-1XnO3n+1)2 layers, where X = Fe3+, Ti4+ and “n” refers to the number of perovskite-like layers between Bi2O2 layers. Detailed magnetic studies should be done to understand electromagnetic interactions and multiferroic coupling effects. In the present paper, a powder composed of the Aurivillius phase with n = 5, Bi6Fe2Ti3O18, was successfully prepared by the hydrothermal method. The powder was sintered, obtaining dense polycrystalline materials. It was stated that both powder and sintered bodies were paramagnets with a possible antiferromagnetic ordering or a spin-glass state at the liquid helium temperatures.
Pietro VINCENZINI, Vojislav V. MITIC, Alois LOIDL and Dino FIORANI
M. M. Bućko et al., "Magnetic Properties of the Bi6Fe2Ti3O18 Aurivillius Phase Prepared by Hydrothermal Method", Advances in Science and Technology, Vol. 67, pp. 170-175, 2010