Distributed exchange interactions and temperature dependent magnetization in amorphous Fe88-xCoxZr7B4Cu1 alloys
Abstract
The temperature dependence of the magnetization for Fe88Zr7B4Cu1 amorphous alloy has been measured. M(T) has been fit using a Handrich-Kobe model with a modified Brillouin function with an additional exchange fluctuation term. Here for the first time, an asymmetrical distribution of the exchange interactions is proposed based on empirical knowledge of the Bethe-Slater curve. A two-parameter exchange fluctuation is shown to give significantly better fits to M(T) for these amorphous alloys.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- April 1999
- DOI:
- 10.1063/1.369100
- Bibcode:
- 1999JAP....85.5130G
- Keywords:
-
- 75.50.Kj;
- 75.50.Bb;
- 75.30.Et;
- 75.60.Ej;
- 61.43.Fs;
- 75.30.Kz;
- Amorphous and quasicrystalline magnetic materials;
- Fe and its alloys;
- Exchange and superexchange interactions;
- Magnetization curves hysteresis Barkhausen and related effects;
- Glasses;
- Magnetic phase boundaries