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Browsing by Author "Achary, S.N."

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Browsing by Author "Achary, S.N."

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    High pressure phase transitions in NdVO4 
    Panchal, V.; Errandonea, Daniel; Manjón Herrera, Francisco Javier; Muñoz, Alfonso; Rodríguez Hernández, Plácida; Bettinelli, Marco; Achary, S.N.; Tyagi, A.K. (AIP Publishing, 2015)
    Raman-scattering measurements on NdVO4 suggest a pressure-induced zircon to monazite phase transition beyond 5.9 GPa. The monazite phase undergoes a second phase transition to a yet unknown phase at 18.1 GPa. Lattice-dynamics ...
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    High-pressure lattice-dynamics of NdVO4 
    Panchal, V.; Errandonea, D.; Manjón, F. J.; Muñoz, A.; Rodríguez-Hernández, P.; Achary, S.N.; Tyagi, A.K. (Elsevier, 2017-01)
    High-pressure Raman-scattering measurements and ab initio calculations on NdVO4 have been carried out up to 30 GPa. Our combined experimental and theoretical study confirms that beyond 5.9 GPa NdVO4 undergoes an irreversible ...
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    High-pressure structural and vibrational properties of monazite-type BiPO4, LaPO4, CePO4, and PrPO4 
    Errandonea, D.; Gomis, O.; Rodríguez Hernández, Plácida; Muñoz, A.; Ruiz Fuertes, J.; Gupta, M.; Achary, S.N.; Hirsch, A.; Manjón, Francisco-Javier; Peters, L.; Roth, G.; Tyagi, A.K.; Bettinelli, Marco (IOP Publishing, 2018)
    [EN] Monazite-type BiPO4, LaPO4, CePO4, and PrPO4 have been studied under high pressure by ab initio simulations and Raman spectroscopy measurements in the pressure range of stability of the monazite structure. A good ...
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    High-pressure study of ScVO4 by Raman scattering and ab initio calculations 
    Panchal, V.; Manjón Herrera, Francisco Javier; Errandonea, D.; Rodriguez-Hernandez, P.; López-Solano, J.; Muñoz, A.; Achary, S.N.; Tyagi, A.K. (American Physical Society, 2011-02-25)
    We report results of experimental and theoretical lattice-dynamics studies on scandium orthovanadate up to 35 GPa. Raman-active modes of the low-pressure zircon phase are measured up to 8.2 GPa, where the onset of an ...
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    New high-pressure phase and equation of state of Ce2Zr2O8 
    Errandonea, Daniel; Kumar, R.S.; Achary, S.N.; Gomis Hilario, Oscar; Manjón Herrera, Francisco Javier; Shukla, R.; Tyagi, A.K. (American Institute of Physics (AIP), 2012-03-08)
    In this paper we report a new high-pressure rhombohedral phase of Ce2Zr2O8 observed in high-pressure angle-dispersive x-ray diffraction and Raman spectroscopy studies up to nearly 12 GPa. The ambient-pressure cubic phase ...
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    Raman scattering study of bulk and nanocrystalline PbMoO4 at high pressures 
    Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Muñoz, Alfonso; Errandonea, Daniel; Achary, S.N.; Tyagi, A.K. (American Institute of Physics (AIP), 2012-11-21)
    High-pressure Raman scattering measurements have been performed in wulfenite (PbMoO4) for both bulk and nanocrystalline powders up to 22 GPa. Our Raman scattering measurements evidence the phase transition from the tetragonal ...
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    Structural and vibrational properties of corundum-type In2O3 nanocrystals under compression 
    Sans-Tresserras, Juan Ángel; Vilaplana Cerda, Rosario Isabel; Errandonea, Daniel; Cuenca Gotor, Vanesa Paula; García-Domene, Braulio; Popescu, Catalin; Manjón, Francisco-Javier; Singhal, A.; Achary, S.N.; Martinez-Garcia, D.; Pellicer-Porres, J.; Rodríguez-Hernández, P.; Muñoz, Alfonso (IOP Publishing, 2017)
    [EN] This work reports the structural and vibrational properties of nanocrystals of corundum-type In2O3 (rh-In2O3) at high pressures by using angle-dispersive x-ray diffraction and Raman scattering measurements up to 30 ...