Abstract
The orbital contribution to the magnetic moment of is zero, and the anisotropy is weak and dominated by the classical dipole interaction in most Gd systems. At the ordering wave vector in , the transverse components are more strongly coupled than the and components, and the magnetic moments order in a linearly polarized sinusoidal wave just below . In this situation, the fourth-order term in the Landau expansion favors the double- ordering, which ordering is found to explain the magnetic phase diagram and the “magnetoelastic paradox.”
- Received 20 December 2007
DOI:https://doi.org/10.1103/PhysRevB.77.134408
©2008 American Physical Society