Abstract
AbstractThe magnetic anisotropy and ferromagnetic resonance linewidth of CdCr2S4 single crystals were studied a t helium temperatures. The angular dependence of linewidth and resonance field shows anomalies near the [111], [110], and [112] direction. These are shown to be due t o impurity ions with near‐crossing levels as Fez+ on the tetrahedral site and possibly Cr2+ on the octahedral site. From calculations of the anisotropy due to Cr2+ ions it appears that, although their anisotropy can be very large, these cannot be responsible for the anomalous behaviour of non‐stoichiometric CdCr2S4 reported in the literature. It is suggested that ferrous ion impurities are responsible for this.
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