Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
64 (1988), S. 3637-3640
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
In this work experimental results in infrared absorption at low temperatures on the layered compounds of the MPX3 (M=Fe,Ni and X=S,Se) family are reported. The absorption spectra in the far infrared (between 50 and 500 cm−1) recorded on thin slabs of these compounds (10 μm thick) are compared with the corresponding Raman spectra and this comparison confirms the hypothesis of the phonon branches folding in the antiferromagnetic phase of FePS3 below the Néel transition at 118 K. In the midinfrared (between 700 and 4000 cm−1), broad bands have been observed at low temperatures for the iron phosphorus trichalcogenide compounds. These absorption bands are attributed to electronic transitions for both FePS3 and FePSe3 lamellars, which are mainly due to the splitting of the 3d-metal levels by the pseudooctahedral field created by the nearest-neighbor sulfur atoms.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.341402
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