A Random Bond Ising Model Applied to the Magnetic Properties of FexMn0.6—xAl0.4 Disordered Alloys
✍ Scribed by Ligia E. Zamora; G.A. Pérez; A. Bohórquez
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 76 KB
- Volume
- 220
- Category
- Article
- ISSN
- 0370-1972
No coin nor oath required. For personal study only.
✦ Synopsis
An Ising Hamiltonian, which includes diluted and random bonds, and the Mean Field Renormalization Group (MFRG) technique were used to obtain a theoretical phase diagram as a function of the antiferromagnetic sites concentration for the Fe x Mn 0.6Àx Al 0.4 system. A probability distribution was proposed in order to simulate the diluted and random bonds of the system. The competitive parameters and the exchange constants were fitted in such way that the calculated magnetic phase diagram was in excellent agreement with the experimental phase diagram obtained by magnetic susceptibility for the Fe x Mn 0.6Àx Al 0.4 alloy system. This model as well as the experimental results, propose several magnetic phases: antiferromagnetic, spin-glass, reentrant spin-glass, ferromagnetic and paramagnetic.
L. E. Zamora et al.: Random Bond Ising Model Applied to Fe x Mn 0.6Àx Al 0.4