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- Title
Magnetic Phase Diagram for a Random Three-Dimensional Ising Point-Dipole Lattice.
- Authors
Meılikhov, E. Z.
- Abstract
It is shown, within the framework of the generalized mean-field theory, that the ground state of a system of Ising point dipoles randomly filling the sites of a three-dimensional cubic lattice depends on the fraction of filled sites. For example, a body-centered lattice is ferromagnetic at p>p[SUBc1]∼0.55, a spin glass at p[SUBc1]<p<p[SUBc2]∼0.35, and paramagnetic at p<p[SUBc2]. The transition between these states has a percolation nature. The temperature dependences of the magnetization in the ferromagnetic phase and the susceptibility in the paramagnetic phase were determined. The magnetic phase diagram of the system was constructed.
- Subjects
MAGNETIC dipoles; LATTICE dynamics; ISING model
- Publication
JETP Letters, 2003, Vol 77, Issue 10, p571
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1595699