Raman scattering of rare earth sesquioxide Ho₂O₃: A pressure and temperature dependent study
Journal Article
·
· Journal of Applied Physics
- Pressure and Vacuum Standards, National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012 (India)
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.
- OSTI ID:
- 22305742
- Journal Information:
- Journal of Applied Physics, Vol. 116, Issue 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
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