Complete first-order Raman spectra of the pyrite structure compounds FeS2, MnS2 AND SiP2

Perfect reversibility of the lithium insertion in FeS2: The combined effects of all-solid-state and thin film cell configurations

“…1b), similar to the FeS 2 powder one, is dominated by 3 narrow bands characteristic of a well-crystallized FeS 2 pyrite phase, at ca. 343 cm − 1 (E g mode), 379 cm −1 (A g ) and 430 cm −1 (T g ), in agreement with literature (note that 5 Raman-active modes A g ⊕ E g ⊕ 3T g are predicted by the factor group theoretical analysis of the FeS 2 pyrite structure but 2 T g modes are expected at 350 and 377 cm −1 in close vicinity of the intense E g and A g bands) [13].…”

Raman studies of nearly half-metallic ferromagnetic CoS2

“…2) as identified by group theory analysis 13 , can be active in the CoS 2 structure, and all of them were observed in the current experiments. As is illustrated in 2 the A g and T g (2) modes correspond to in-phase and out-of-phase stretching vibrations of sulphur atoms in the dumbbells.…”

Electrochemical verification of the redox mechanism of FeS2 in a rechargeable lithium battery

“…1c. Three absorption peaks at 343, 379, and 430 cm À1 show the characteristic active modes of the iron pyrite, which correspond to the S 2 vibration (E g ), SÀ ÀS in-phase stretch (A g ), and coupled vibration and stretch (T g ) modes, respectively [22,23].…”