Spectroscopic determination of the orientation of the antiferromagnetism vector of MnF2 in the spin-flop phase
V. V. EremenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences, Ukrainian SSR, KharkovN. KanerPhysicotechnical Institute of Low Temperatures, Academy of Sciences, Ukrainian SSR, KharkovYu. G. LitvinenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences, Ukrainian SSR, KharkovA. MilnerPhysicotechnical Institute of Low Temperatures, Academy of Sciences, Ukrainian SSR, KharkovV. V. ShapiroPhysicotechnical Institute of Low Temperatures, Academy of Sciences, Ukrainian SSR, Kharkov
ABI
Annotatsiya
Using optical spectroscopy we have determined the orientation of the antiferromagnetism vector 1 in the basal plane of antiferromagnetic MnF2 in the spin-flop phase with H oriented exactly along C4. This direction is a C2 axis. The magnitude of the anisotropy field is found to be HA′ ≃6.5·10−3 T, and the sign of the fourth order anisotropy parameter in the basal plane is also determined.
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