Effects of pressure on the boson peak of telluriteglasses: Evidence of an elastic glass-to-glass transition
- 11 May 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 81 (17)
- https://doi.org/10.1103/physrevb.81.174202
Abstract
The Raman spectra of three (, 0.2, and 0.4) glasses have been measured under pressure up to 13 GPa. We report an unusual pressure dependence of the Boson peak frequency which is quite different from that observed in relevant experiments for other network glasses or predicted by theory. The unexpected observed effect indicates that tellurite glasses respond like elastic, rather than plastic, media to both compression and decompression treatments. We suggest that, with respect to plastic versus elastic deformation mode, the behavior of glasses under pressure is not universal. Further, we conclude that a medium range order elastic glass-to-glass transition from a rigid to a more flexible network is induced by pressure for two of the glasses . This transition is reversible upon decompression, merely exhibiting a small hysteresis. DOI: http://dx.doi.org/10.1103/PhysRevB.81.174202 © 2010 The American Physical Society
Keywords
This publication has 55 references indexed in Scilit:
- Sato and Funamori Reply:Physical Review Letters, 2009
- Comment on “Sixfold-Coordinated Amorphous Polymorph ofunder High Pressure”Physical Review Letters, 2009
- A new EXAFS investigation of local structural changes in amorphous and crystalline GeO2at high pressureJournal of Physics: Condensed Matter, 2009
- Sixfold-Coordinated Amorphous Polymorph ofunder High PressurePhysical Review Letters, 2008
- Nature of the Structural Transformations inGlass under High PressurePhysical Review Letters, 2008
- Network Rigidity inGlass at High PressurePhysical Review Letters, 2008
- Topological changes in glassyat pressures up todetermined by high-energy x-ray and neutron diffraction measurementsPhysical Review B, 2006
- Probing of bonding changes in B2O3 glasses at high pressure with inelastic X-ray scatteringNature Materials, 2005
- Pressure Raman effects and internal stress in network glassesPhysical Review B, 2005
- Transformations in the Intermediate-Range Structure ofGlass under High Pressure and TemperaturePhysical Review Letters, 2004