H. Rohrer, A. Aharony, et al.
Journal of Magnetism and Magnetic Materials
Cubic n-component spin systems exhibit two distinct quadratic spin anisotropy crossover exponents, appropriate for axial and diagonal anisotropies. Results for n→∞ and to order ε{lunate}2, and for nm-component systems are given, and relevance to multi-critical points in various systems is discussed. © 1976.