Magnetocrystalline anisotropy of Sm1-xNdxCo5alloys

Magnetocrystalline anisotropy of the quasibinary Sm
1-x
Nd
x
Co
5
compounds has been studied in detail at temperatures 4.2 - 280 K. Anomalous behaviour of hard direction magnetization curves has been revealed for some alloys at low temperatures. This phenomenon is explained in terms of non-coherent mutual orientations of the sublattice magnetic moments during magnetization process. It is shown that Sucksmith - Thompson method of anisotropy constant determination can give correct results for the studied alloy system.