Lanthanum hydrides LaH x , 2.0ഛ x ഛ 3.0, are characterized by static magnetic susceptibility analysis and 139 La nuclear magnetic resonance investigations ͑line splittings, linewidth, line shift, and spin lattice relaxation͒. Temperature and composition dependence of all quantities is determined. Chemical shift is larger than the Knight shift for 139 La in the LaH x compounds. The x dependence of the density of states D͑E F ͒ is derived site selectively and separated into s-and d-like contributions.
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