Orientational phase transitions in anisotropic rare-earth magnets at low temperatures

Abstract

Orientational phase transitions are investigated within the Heisenberg model with single-site anisotropy. The temperature dependence of the cone angle is calculated within the spin-wave theory. The role of the quantum renormalizations of anisotropy constants is discussed. A comparison with the experimental data on the cone-plane orientational transition in holmium is performed.

9 pages, LaTeX, 3 figures

References in corpus (2)

• On the self-consistent spin-wave theory of layered Heisenberg magnets
• Thermodynamics of isotropic and anisotropic layered magnets: renormalization group approach and 1/N expansion