Anomalous Magnetic Anisotropy and Resonance Linewidth in CdCr2S4

✍ Scribed by B. Hoekstra; R. P. van Stapele

• Book ID: 104543914
• Publisher: John Wiley and Sons
• Year: 1973
• Tongue: English
• Weight: 444 KB
• Volume: 55
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2220550216

✦ Synopsis

Abstract

The magnetic anisotropy and ferromagnetic resonance linewidth of CdCr~2~S~4~ 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 Cr^2+^ on the octahedral site. From calculations of the anisotropy due to Cr^2+^ ions it appears that, although their anisotropy can be very large, these cannot be responsible for the anomalous behaviour of non‐stoichiometric CdCr~2~S~4~ reported in the literature. It is suggested that ferrous ion impurities are responsible for this.