Effects of biquadratic exchange interactions on the magnetization process of an antiferromagnetic classical-spin chain are theoretically studied in connection with experimental results of CsMnCl3·2H2O. The interactions being relatively weak have significant influence on the transition from the spin-flopped state to the ferromagnetic state, which explains the characteristic feature of the saturation behavior of the magnetization process observed in CsMnCl3·2H2O. In addition, the parameter values we determine reproduce reasonably well the susceptibility and the spin wave spectrum observed at zero field.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering