Abstract
Abstract Electronic structure of the YbNi 4 B compound was studied by X-ray photoelectron spectroscopy and ab initio calculations. The valence band spectrum at the Fermi level exhibits the domination of the Yb(4f) states, which are hybridized with the Ni(3d) states. The YbNi 4 B is paramagnetic and follows the Curie–Weiss law, the effective magnetic moment is smaller than that in the case of Yb +3 ion. Both susceptibility and XPS data show possibility of the intermediate valence state of the Yb ions.
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