In the present work the metallorganic decomposition technique has been applied to grow high-coercivity isotropic polycrystalline BaFe12O19 thin films on ZrO2/Si substrates. The influence of several growth parameters on the magnetic properties, such as the film thickness, the annealing temperature (500-850°C) and the atmosphere during thermal treatments (oxygen and air), is reported. Barium hexaferrite formation starts at 600°C, the reaction being completed within relatively short times; above 700°C, a beneficial effect of an O2 atmosphere on iHc was found. In these films particles tend to behave as single domain in the thermically demagnetized state.
Magnetic properties of polycrystalline BaFe12O19 thin films prepared from metallorganic decomposition on ZrO2-coated Si substrates
BE Watts;
1995
Abstract
In the present work the metallorganic decomposition technique has been applied to grow high-coercivity isotropic polycrystalline BaFe12O19 thin films on ZrO2/Si substrates. The influence of several growth parameters on the magnetic properties, such as the film thickness, the annealing temperature (500-850°C) and the atmosphere during thermal treatments (oxygen and air), is reported. Barium hexaferrite formation starts at 600°C, the reaction being completed within relatively short times; above 700°C, a beneficial effect of an O2 atmosphere on iHc was found. In these films particles tend to behave as single domain in the thermically demagnetized state.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
