Abstract: Crystals of holmium polysulfides, up to 3×2×1.5 mm in size, were grown by spontaneous crystallization from melted KI. A diversity in morphology was observed from thin transparent plates to polyhedrons with mirror-like surfaces. For crystals of different forms, the composition was determined, and density as well as refractory index was measured. Several phases crystallized, two of which were characterized using single-crystal X-ray diffraction as HoS1.885(5)(I), tetragonal, P4/nmm, a=3.820(1), c=7.840(3) Å, V=114.40(6) Å3, Z=2, dcal=6.542 g/cm3 and HoS1.863(8)(II), monoclinic P21/m, a=10.961(2), b=11.465(2), c=10.984(2) Å, β=91.27(3)°, V=1380.0(4) Å3, Z=24, dcal=6.486 g/cm3. Raman spectra reveals the characteristic band, corresponding to S−–S− pair vibrations in the polyanionic layer. Crystals are transparent in the 0.65–25 μm spectral range, the bands with a fine structure in the transparency region being related to Ho3+. The shortwave absorption edge is described by an exponential law (Urbach’s rule) due to tails of state density for conduction and valence bands.

Cite: Belaya S.V. , Vasilyeva I.G. , Pervukhina N.V. , Podberezskaya N.V. , Eliseev A.P.
Holmium polysulfides: Crystal growth, structure and properties
Journal of Alloys and Compounds. 2001. V.323-324. P.26-33. DOI: 10.1016/S0925-8388(01)01002-7 Scopus OpenAlex

Identifiers:

Scopus:	2-s2.0-0035850163
OpenAlex:	W2063057027

Citing:

DB	Citing
Scopus	9
OpenAlex	10

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