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VOLUME 17 (1973) | ISSUE 9 | PAGE 484
Anomalous Behavior of the Magnetic Susceptibility Near the Magnetic-compensation Point in Compounds of Rare-earth Metals with Iron
In ferrimagnetic compounds of rare-earth metals with iron (KoPe3, ErFe3, and ErFe2) we observed, near the compensation point Tc, maxima on the temperature dependence of the differential susceptibility χ, one at Τ < Τ and another at Τ > Τ . Calculations of с с χ performed on the basis of the molecular-field theory have shown that such maxima on the χ(Τ) curves should appear in the noncollinear phase in fields weaker than the effective exchange field, if the magnetic field is directed along the easy-magnetization axis. It is shown that the theoretical value of the susceptibility in the noncollinear phase agrees with the experimental data.