Über die Sulfide der seltenen Erden

Abstract

Es wurden die Disulfide von Lathan und Cer, sowie die Sesqui‐ sulfide von Scandium, Yttrium, Lanthan, Cer, Praseodym, Neodym, Samarium, Gadolinium, Dysprosium, Erbium und Ytterbium dargestellt, eine Reihe davon erstmalig. Die erhaltenen Präparate wurden durch Röntgendiagramme, Farbbestimmungen, Dichtemessungen und Bestimmung des Magnetismus charakterisiert.

Metal Oxysulfides: From Bulk Compounds to Nanomaterials

“…Hauser indicated that the zirconium and thorium oxysulfides were pyrophoric. Without knowing it, Klemm et al were probably the first to obtain a pure phase of Ln 2 O 2 S by heating Er(SO 4 ) 3 in H 2 S and consequently getting Er 2 O 2 S, that they only described as pale pink and resistant to other heating treatments in H 2 S (Klemm et al, 1930).…”

P-Type and N-Type Semiconductivities of Solid Yttrium Sulfide

“…(3) where YY and Ss denote the yttrium atom and the sulfur atom at its lattice point, respectively, and e' denotes the conduction electron. When n is the density of conduction electrons, the equilibrium constant for reaction (3) can be written as (4) According to the electrical neutrality condition, 3[Yi]=n, we have…”

An electron microscope examination of scandium sesquisulphide, Sc2S3, and its mode of disordering in the electron beam

“…In this group Sc has the shortest bond length to S, and Sc2S3 is one of the structure types. Its study commenced over fifty years ago when it was prepared by the action of H2S on ScC13 (Klemm, Meisel &von Vogel, 1930). Attempts then made to deduce its structure from X-ray powder diffraction analysis were unsuccessful.…”