Über Mononitride und stickstoffreichere Nitride der Seltenerdmetalle (Mitt. I)

摘要

All Rare Earth metals (with the exception of Pm) and Y were nitrided with ammonia and nitrogen. Ammonia and nitrogen of normal pressure yield pure and stoichiometric mononitrides. Nitrogen of higher pressure (30 at and 300 at) results in the formation of nitrides with higher nitrogen content. In the case of Ce, Pr, Nd compounds with aSEN2stoichiometry (SE=Rare Earth Metal) and an X-ray powder pattern similar to that of the La2O3-type can be observed. Higher nitrides of the metals Tb, Dy, Ho, Tm, Lu give powder patterns of the cubic Mn2O3-type. The precise composition of these latter nitrides could not be determined as yet.