CuCr₂Se₄単結晶の磁気的性質

抄録

Magnetic properties of CuCr₂Se₄ single crystals have been investigated. The saturation magnetic moment at 0 K is 5.07 μ_B per formula. The magnetocrystalline anisotropy constants K₁ and K₂ are −6.9×10⁵ and −0.9×10⁵ erg/cc, respectively, at 5.1 K. In order to examine the effects of annealing on the magnetocrystalline anisotropy, the ferromagnetic resonance at room temperature is measured after annealing in vacuum and in Se-atmosphere, respectively. It is found that the absolute values of K₁ and K₂ decrease after annealing in vacuum and increase toward the initial values after annealing in Se-atmosphere.
The above results are discussed on the basis of the ionic model.