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Updated: May 23, 2026

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
Published on: April 12, 2017
YMn2Hx and RMn(2-y)Fe(y)H6 (R = Y, Er) studied by Raman, infrared and inelastic neutron scattering spectroscopies
V Paul-Boncour1, S F Parker, H Hagemann
1Institut de Chimie et des Matériaux de Paris-Est, CMTR, CNRS and UPEC, 2-8 rue H. Dunant, 94320 Thiais Cedex, France. paulbon@icmpe.cnrs.fr
Abstract:
YMn2 forms either interstitial YMn2Hx hydrides for x < or = 4.5 or a complex YMn2H6 hydride when submitted to high hydrogen pressure. These compounds have been studied by inelastic neutron scattering (INS) in order to clarify the different modes of H vibration. The INS spectra of YMn2Hx hydrides are strongly dependent on the H content. YMn2H6 and YMn2D6 show broad bands, also observed by Raman and IR spectroscopy, assigned to H-Mn-H (or D) and Mn-H bending and stretching modes. Both ErMn2D6 and ErMn1.8Fe0.2D6 show, in addition to the H vibration mode, an intense band at 215 cm(-1) which has been attributed to a magnetic excitation of Er3+ in view of its momentum transfer dependence.
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