Effect of hydrogen on magnetic properties of Lu2Fe14B single crystal

Effect of hydrogen on the magnetic properties of Lu2Fe14B is studied on single crystal samples of the compound and the hydride Lu2Fe14BH2.5. The Curie temperature TC and the average Fe magnetic moment MFe increase upon hydrogenation whereas the first anisotropy constant K1 decreases. In both the hydride and the parent compound, K1(T) exhibits a characteristic non-monotonous behavior.