摘要
The intrinsic magnetic properties of the tetragonal Sm_(14)Fe_(78-x)C_(8) system are investigated.In addition to the sudden drop of σ_(s) and T_(c), an ajiomalous variation of the lattice constants is found.The sign of K_(1) changes from negative to positive between x=15 and 20 at 1.5 Kf thus the cone-type anisotropy becomes uniaxial correspondingly.The intrinsic magnetic hardness effect at low temperature is observed at high Mn content.
基金
Supported in part by the Magnetics Open Lab.of Academia Sinica.
