Magnetic Anisotropy Measurement on CsMnCl₃

抄録

The magnetic anisotropy of CsMnCl₃ was measured using a high sensitive torquemeter. Interpretations of the torque measurements below the Néel point are presented. From this analysis are determined the anisotropy constants K₁ and K₂ at 4.2 K as 2.39×10 erg/cm³ and 4.74×10³ erg/cm³, respectively, where K₁ is associated with the anisotropy energy within the (001) plane and K₂ with that which confines the spin axis in the plane. A large reduction in K₂ was found, which is possibly due to a domain effect.