Structural study of lanthanum oxysulfate (LaO)2SO4

X-ray structural study on the different redox behavior of La and Pr oxysulfates/oxysulfides

“…2. The La 2 O 2 2+ layer in both structures consists of OLn 4 tetrahedra linked together by sharing of edges [6,7]. Although the structural parameters of the Pr 2 O 2 SO 4 were recently reported in our recent paper [8], those of Pr 2 O 2 S have not been reported so far.…”

Emission properties of Tb3+ in Y2O2SO4 derived from their precursory dodecylsulfate-templated concentric- and straight-layered nanostructures

“…The specific crystal field around Eu 3+ ions is likely based on deformation of sulfate groups induced through the conversion of concentric dodecylsulfate-layers to straight sulfatelayers upon calcination. Similarly to the Eu 3+ -doped system, on the other hand, the FT-IR spectra for the Tb 3+ -doped samples 2 and 3 also indicated any deformation of sulfate groups, as suggested from the 1:2:2 splitting of 3 bands due to asymmetric stretching vibrations of S-O bonds in SO 4 tetrahedra [15] together with the characteristically broad bands superposed with all of the 1 -4 bands (Fig. 5).…”

Regulating Mid-infrared to Visible Fluorescence in Monodispersed Er3+-doped La2O2S (La2O2SO4) Nanocrystals by Phase Modulation

“…LOSO and LOS adopt a similar crystal structure3536. Both LOSO and LOS crystal structures are consist of two alternative stacking units: a positive charged (La 2 O 2 ) 2+ layer and a layer of anion groups, sulfate (SO 4 ) 2− for LOSO (Fig.…”

“…It is worth noticing that RE 2 O 2 S and RE 2 O 2 SO 4 adopt a similar crystal structure3536. The phase transition between RE 2 O 2 S and RE 2 O 2 SO 4 in fact is the removal or insertion of oxide anions surround sulfur37.…”