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Title: Raman scattering of rare earth sesquioxide Ho₂O₃: A pressure and temperature dependent study

Pressure and temperature dependent Raman scattering studies on Ho₂O₃ have been carried out to investigate the structural transition and the anharmonic behavior of the phonons. Ho₂O₃ undergoes a transition from cubic to monoclinic phase above 15.5 GPa, which is partially reversible on decompression. The anharmonic behavior of the phonon modes of Ho₂O₃ from 80 K to 440 K has been investigated. We find an anomalous line-width change with temperature. The mode Grüneisen parameter of bulk Ho₂O₃ was estimated from high pressure Raman investigation up to 29 GPa. Furthermore, the anharmonic components were calculated from the temperature dependent Raman scattering.
Authors:
; ; ; ;  [1]
  1. Pressure and Vacuum Standards, National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012 (India)
Publication Date:
OSTI Identifier:
22305742
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; HOLMIUM OXIDES; LINE WIDTHS; MONOCLINIC LATTICES; PHONONS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; RAMAN EFFECT; RARE EARTHS; TEMPERATURE DEPENDENCE