Influence of quadratic Zeeman effect on spin waves in dipolar lattices

Abstract

A lattice of particles with dipolar magnetic moments is considered under the presence of quadratic Zeeman effect. Two types of this effect are taken into account, the effect due to an external nonresonant magnetic field and the effect caused by an alternating quasiresonance electromagnetic field. The presence of the alternating-field quadratic Zeeman effect makes it possible to efficiently vary the sample characteristics. The main attention is payed to the study of spin waves whose properties depend on the quadratic Zeeman effect. By varying the quadratic Zeeman-effect parameter it is possible to either suppress or stabilize spin waves.