Structure and magnetic properties of barium hexaferrite BaFe10CoNiO19 films
Iwan Sugihartono, Erfan Handoko*, Mangasi. Alion Marpaung
Dept of Physics. Universitas Negeri Jakarta. Jalan Rawamangun Muka 13220. Jakarta Indonesia
Abstract
In this paper, we report a simple method to prepare different concentrations in molarities Co-Ni doped BaFe10CoNiO19 films on the quartz glass substrates by ultrasonic spray pyrolysis. The Samples were prepared by dissolving iron nitrate (Fe(NO3)3.9H2O), barium nitrate (Ba(NO3) 2) in DI water while stirring at 70-80o C. In these solutions Fe/Ba ratios varied from 12 to 6. Precursor solution was sprayed onto the cleaned quartz plates previously heated to 150 – 200o C, using a sprayer and argon as carrier gas. For crystallization the films were annealed in a furnace at a temperature 1000o C for about 3 h in air. Crystal structure of the film was determined by X-ray diffraction using CuK radiation. The microstructure was examined by a JEOL JSM-5310LV scanning electron microscope. The magnetic properties were measured using a vibrating sample magnetometer. The substitution of Fe3+ ion by Co2+ and Ni2+ has changed magnetic properties of barium hexagonal films.
Keywords: BaFe10CoNiO19 films, ultrasonic spray pyrolysis, barium hexaferrite
Topic: Physics