Exchange interaction

Quantum mechanics

Materials science

Ferromagnetism

Range (aeronautics)

Acoustics

Spins

Magnetic dipole

Lattice (music)

Magnetism

Physics

Dipole

Isotropy

Condensed matter physics

Composite material

Physical review. B, Condensed matter

The effect of the dipole-dipole interaction on the magnetism of a two-dimensional lattice of spins coupled by isotropic short-range exchange interactions is investigated. In the noninteracting spin-wave approximation it is shown that for positive J the system becomes ferromagnetic.

Dipole-dipole interactions and two-dimensional magnetism