Magnetic anisotropy in Pb_{1-x-y}Sn_{y}Mn_{x}Te studied by ferromagnetic resonance

Proceedings of the XXII International School of Semiconducting Compounds, Jaszowiec 1993 We will report on the anisotropy in (Pb)SnMnTe, studied by ferromagnetic resonance. We have found a cubic anisotropy with a = 73 × 10-4 cm-1 for Sn1-xMnxTe and a = 200 × 10-4 cm-1 for Pb0.28-xSn0.72MnxTe. We will indicate some possible explanations for this anomalously large anisotropy.