Gitterschwingungsspektren. XV. FIR-Spektren und Schwingungsanalyse von FeS2-Markasit / Lattice Vibration Spectra. XV. FIR-Spectra and Vibration Analysis of FeS2 Marcasite

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Abstract
The infrared-active lattice vibrations of the orthorombic marcasite (FeS2) have been studied by measuring the reflectivity of different crystal faces at near-normal incidence. A group-theoretical analysis predicts seven infrared-active modes (k = 0). Cartesian symmetry coordinates as well as vibrational modes of the lattice vibrations are constructed

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