Critical behavior in magnetic superlattices
Abstract
Based on the effective field theory with correlations, the critical behavior of a magnetic superlattice consisting of two different ferromagnets is examined. A simple cubic Ising model with nearest-neighbor coupling is assumed. It is found that there exists a critical value for the interface exchange coupling above which the interface magnetism appears. The critical temperature of the superlattice is studied as a function of the thickness of the constituents in a unit cell and of the exchange coupling energies in each material. A phase diagram is also given.
- Publication:
-
Unknown
- Pub Date:
- January 1991
- Bibcode:
- 1991cbms.book.....H
- Keywords:
-
- Ferromagnetism;
- Field Theory (Algebra);
- Interfacial Energy;
- Ising Model;
- Phase Diagrams;
- Superlattices;
- Coupling;
- Critical Temperature;
- Magnetic Fields;
- Magnetic Properties;
- Solid-State Physics