Holmium polysulfides: crystal growth, structure and properties

Structural Frustration and Occupational Disorder: The Rare Earth Metal Polysulfides Tb8S14.8, Dy8S14.9, Ho8S14.9, and Y8S14.8

“…The structures of the rare-earth metal polysulfides DyS 1.77 , DyS 1.836 , and HoS 1.863 have been described in space group P 12 1 / m 1 with lattice parameters of a ≈ c ≈ 11 Å, b ≈ 11.5 Å, and β ≈ 91° in a model with an incomprehensible distribution of S 2– and S 2 2– anions in the planar layer . There is, however, an alternative setting of the unit cell which allows for a more specific structural arrangement and which has been verified experimentally for a number of rare-earth metal polychalcogenides .…”

17 Scandium, yttrium, the lanthanides and the actinides

“…28 Holmium polysulfides have been examined and the phases HoS 1.863 and HoS 1.885 characterised. 29 The structure of δ-Er 2 S 3 shows it to be isostructural with δ-Ho 2 S 3 . 30…”

Holmium polysulfide crystals: Structure, shape and composition

“…The density values calculated, taking into account that the determined quantity of impurities is good, adjusted with measurement results. Thus, the diversity in chemical composition and density of crystals of holmium polysulfide monoclinic phase in the work [6] was only due to different levels of sulfur impurities, in addition to the chemical analysis error, rather than due to polysulfide phase multiplicity.…”

“…Earlier, we described a variety of shapes, chemical compositions and a diversity in density values observed for holmium polysulfide crystals grown from the KI flux within one experiment [6]. It was possible to say about three phases in which compositions, HoS 1.67 , HoS 1.84 and HoS 1.96 %, differed more by the chemical analysis method error, i.e.…”