Abstract
Specific heat, magnetic torque, and magnetization studies of LiCoPO olivine are presented. They show that a unique set of physical properties of LiCoPO leads to the appearance of features characteristic of two-dimensional Ising systems near the Néel temperature = K and to the appearance of an uncommon effect of the influence of a magnetic field on the magnetocrystalline anisotropy. The latter effect manifests itself as a first-order transition, discovered at 9 K, induced by a magnetic field of 8 T. The physical nature of this transition was explained, and a model describing experimental dependences satisfactorily was proposed.
- Received 21 April 2011
DOI:https://doi.org/10.1103/PhysRevB.84.104419
©2011 American Physical Society