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Browsing by Author "Rodríguez-Hernández, P."

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Browsing by Author "Rodríguez-Hernández, P."

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    Arsenolite: a quasi-hydrostatic solid pressure transmitting medium 
    Sans-Tresserras, Juan Ángel; Manjón, F. J.; Popescu, C.; Muñoz, A.; Rodríguez-Hernández, P.; Jordá, J. L.; Rey Garcia, Fernando (IOP Publishing, 2016-11-30)
    This study reports the experimental characterization of the hydrostatic properties of arsenolite (As4O6), a molecular solid which is one of the softest minerals in the absence of hydrogen bonding. The high compressibility ...
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    beta-Bi2O3 under compression: Optical and elastic properties and electron density topology analysis 
    Pereira, A. L. J.; Gomis, O.; Sans Tresserras, Juan Ángel; Contreras-García, J.; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Muñoz, A.; Beltrán, A. (American Physical Society, 2016-06-30)
    We report a joint experimental and theoretical study of the optical properties of tetragonal bismuth oxide (beta-Bi2O3) at high pressure by means of optical absorption measurements combined with ab initio electronic band ...
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    Electronic and elastic properties of yttrium gallium garnet under pressure from ab initio studies 
    Monteseguro, V.; Rodríguez-Hernández, P.; Lavín, V.; Manjón Herrera, Francisco Javier; Muñoz, A. (American Institute of Physics (AIP), 2013-05-14)
    In this paper, we present an ab initio study within the framework of density functional theory employing the generalized gradient approximation applied to the study of the structural, elastic, and electronic properties of ...
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    High-pressure lattice dynamical study of bulk and nanocrystalline In2O3 
    Garcia Domene, Braulio; Ortiz, H. M.; Gomis Hilario, Oscar; Sans, J. A.; Manjón Herrera, Francisco Javier; Muñoz, A.; Rodríguez-Hernández, P.; Achary, S. N.; Errandonea, D.; Martínez-García, D.; Romero, A. H.; Singhal, A.; Tyagi, A. K. (American Institute of Physics (AIP), 2012-12-19)
    The effect of pressure on the vibrational properties of bulk and nanocrystallinepowders of cubic bixbyite-type In2O3 has been investigated at room temperature by means of Raman spectroscopy up to 31.6 and 30¿GPa, respectively. ...
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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 optical and vibrational properties of CdGa2Se4: Order-disorder processes in adamantine compounds 
    Gomis Hilario, Oscar; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Pérez-González, E.; López-Solano, Javier; Rodríguez-Hernández, P.; Muñoz, Alfonso; Errandonea, Daniel; Ruiz Fuertes, Javier; Segura Garcia del Rio, Alfredo; Santamaría Pérez, David; Tiginyanu, Ivan; Ursaki, Veacheslav (American Institute of Physics (AIP), 2012-01-10)
    High-pressure optical absorption and Raman scattering measurements have been performed in defect chalcopyrite (DC) CdGa2Se4 up to 22 GPa during two pressure cycles to investigate the pressure-induced order-disorder phase ...
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    High-pressure polymorphs of TbVO4: A Raman and ab initio study 
    Errandonea, D.; Manjón Herrera, Francisco Javier; Muñoz, A.; Rodríguez-Hernández, P.; Panchal, V.; Achary, S. N.; Tyagi, A. K. (Elsevier, 2013-11-15)
    Raman measurements on TbVO4 show the occurrence of three pressure-induced phase transitions. The first one, an irreversible transition from the zircon to the scheelite structure, occurs beyond 6.7 GPa. In addition, two ...
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    High-pressure Raman scattering study of defect chalcopyrite and defect stannite ZnGa2Se4 
    Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Pérez-González, E.; Ortiz, H. M.; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Muñoz, Alfonso; Alonso Gutiérrez, P.; Sanjuán, M.L.; Ursaki, Veacheslav; Tiginyanu, Ivan (American Institute of Physics (AIP), 2013-06-17)
    High-pressure Raman scattering measurements have been carried out in ZnGa2Se4 for both tetragonal defect chalcopyrite and defect stannite structures. Experimental results have been compared with theoretical lattice dynamics ...
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    High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: A comparison with isomorphic compounds 
    Ruiz-Fuertes, J.; Errandonea, D.; López-Moreno, S.; González, J.; Gomis Hilario, Oscar; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Muñoz, A.; Rodríguez-Hernández, P.; Friedrich, A.; Tupitsyna, I. A.; Nagornaya, L. L. (American Physical Society, 2011-06-30)
    Raman scattering measurements and lattice-dynamics calculations were performed on magnesium tungstate (MgWO 4) under high pressure up to 41 GPa. Experiments were carried out on a selection of pressure media. The influence ...
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    High-pressure structural and elastic properties of Tl2O3 
    Gomis, O.; Santamaría-Pérez, D.; Ruiz-Fuertes, J.; Sans, J. A.; Vilaplana Cerda, Rosario Isabel; Ortiz, H. M.; García-Domene, B.; Manjón Herrera, Francisco Javier; Errandonea, D.; Rodríguez-Hernández, P.; Muñoz, A.; Mollar García, Miguel Alfonso (American Institute of Physics (AIP), 2014-10-07)
    The structural properties of Thallium (III) oxide (Tl2O3) have been studied both experimentally and theoretically under compression at room temperature. X-ray powder diffraction measurements up to 37.7 GPa have been ...
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    High-pressure studies of topological insulators Bi2Se3,Bi2Te3, and Sb2Te3 
    Manjón, F. J.; Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Pérez-González, E.; Santamaría-Pérez, D.; Marín-Borrás, V.; Segura-García del Río, A.; González, Jesús; Rodríguez-Hernández, P.; Muñoz, A.; Drasar, C.; Kucek, V.; Muñoz-Sanjosé, V. (Wiley-VCH Verlag, 2013-04)
    Bi2Se3, Bi2Te3, and Sb2Te3 are narrow bandgap semiconductors with tetradymite crystal structure (R-3m) which have been extensively studied along with their alloys due to their promising operation as thermoelectric materials ...
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    High-pressure study of the structural and elastic properties of defect-chalcopyrite HgGa2Se4 
    Gomis Hilario, Oscar; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Santamaría-Pérez, D.; Errandonea, D.; Pérez-González, E.; López-Solano, J.; Rodríguez-Hernández, P.; Muñoz, Alfonso; Tiginyanu, Ivan; Ursaki, Veacheslav (American Institute of Physics (AIP), 2013-02-20)
    In this work, we focus on the study of the structural and elastic properties of mercury digallium selenide (HgGa2Se4) which belongs to the family of AB 2 X 4 ordered-vacancy compounds with tetragonal defect chalcopyrite ...
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    High-pressure vibrational and optical study of Bi2Te3 
    Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Manjón Herrera, Francisco Javier; Segura, A.; Pérez-González, E.; Rodríguez-Hernández, P.; Muñoz, A.; González, J.; Marín-Borrás, V.; Muñoz-Sanjosé, V.; Drasar, C.; Kucek, V. (American Physical Society, 2011-09-09)
    We report an experimental and theoretical lattice dynamics study of bismuth telluride (Bi2Te3) up to 23 GPa together with an experimental and theoretical study of the optical absorption and reflection up to 10 GPa. The ...
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    InBO3 and ScBO3 at high pressures: an ab initio study of elastic and thermodynamic properties 
    Gomis, O.; Ortiz, H. M.; Sans Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier; Santamaría-Pérez, D.; Rodríguez-Hernández, P.; Muñoz, A. (Elsevier, 2016-11)
    We have theoretically investigated the elastic properties of calcite-type orthoborates ABO(3) (A= Sc and In) at high pressure by means of ab initio total-energy calculations. From the elastic stiffness coefficients, we ...
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    Lattice dynamics of Sb2Te3 at high pressures 
    Gomis Hilario, Oscar; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Pérez-González, E.; Muñoz, A.; Kucek, V.; Drasar, C. (American Physical Society, 2011-11-28)
    We report an experimental and theoretical lattice dynamics study of antimony telluride (Sb 2Te 3) up to 26 GPa together with a theoretical study of its structural stability under pressure. Raman-active modes of the ...
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    Lattice dynamics of ZnAl2O4 and ZnGa2O4 under high pressure 
    Lopez-Moreno, S.; Rodríguez-Hernández, P.; Muñoz, A.; Manjón Herrera, Francisco Javier; Romero, Aldo Humberto; Errandonea, Daniel; Rusu, E.; Ursaki, V.V. (WILEY-VCH Verlag GmbH & Co. KGaA,, 2011)
    In this work we present a ¿rst-principles density functional study of the vibrational properties of ZnAl2 O4 and ZnGa2 O4 as function of hydrostatic pressure. Based on our previous structural characterization of these two ...
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    Lattice dynamics study of (Gd1-xYbx)(2)O-3(x=0.11) at high pressure 
    Marí-Guaita, Julia; Gallego-Parra, Samuel; Sans-Tresserras, Juan Ángel; Velázquez, M.; Veber, Phillipe; Rodríguez-Hernández, P.; Manjón, Francisco-Javier; Muñoz, A. (Elsevier, 2021-08-05)
    [EN] In this study, we report an experimental investigation of (Gd1-xYbx)(2)O-3 under high pressure by means of Raman scattering measurements complemented with ab initio calculations in pure Gd2O3. Raman spec-troscopy of ...
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    Pressure-induced phase transition and increase of oxygen-iodine coordination in magnesium iodate 
    Liang, A.; Turnbull, R.; Popescu, C.; Manjón, Francisco-Javier; Bandiello, Enrico; Rodríguez-Hernández, P.; Muñoz, A.; Yousef, I.; Hebboul, Z.; Errandonea, D. (AMERICAN PHYSICAL SOCIETY, 2022-02-17)
    [EN] The structural and vibrational behavior of Mg(IO3)(2) under compression has been investigated via a combination of high-pressure (HP) synchrotron x-ray diffraction (XRD), Raman scattering, and infrared spectroscopy ...
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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 elastic properties of defect chalcopyrite HgGa2S4 under high pressure 
    Gomis Hilario, Oscar; Santamaría-Pérez, D.; Vilaplana Cerda, Rosario Isabel; Luna Molina, Ramón; Sans, J. A.; Manjón Herrera, Francisco Javier; Errandonea, D.; Pérez-González, E.; Rodríguez-Hernández, P.; Muñoz, A.; Tiginyanu, I. M.; Ursaki, V. V. (Elsevier, 2014-01-15)
    In this work, we focus on the study of the structural and elastic properties of mercury digallium sulfide (HgGa2S4) at high pressures. This compound belongs to the family of AB(2)X(4) ordered-vacancy compounds and exhibits ...