The magnetic properties of gadolinium-yttrium alloys

The temperature dependence of the magnetization, the coercive force, and the galvanomagnetic effect of gadolinium-yttrium alloys containing 10, 25 and 35at% yttrium was measured. These curves have an anomalous shape similar to that observed on the corresponding curves for pure gadolinium at temperatures of 210-250°К [3]. They are also similar to the anomalies on the magnetization curves obtained for gadolinium-yttrium alloys with large yttrium contents (greater than 40 at.%) described in [1,2]. We establish that annealing of the alloys changes these anomalies and even makes them disappear. It is suggested that the nature of the anomalous magnetic properties in gadolinium-yttrium alloys and in pure gadolinium are the same and that this is due to breakdown of the noncollinear configurations of the magnetic moments.