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Browsing by Subject "X-Ray Diffraction"

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Browsing by Subject "X-Ray Diffraction"

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    Experimental and theoretical investigations on structural and vibrational properties of melilite-type Sr2ZnGe2O7 at high pressure and delineation of a high pressure monoclinic phase 
    Achary, S. Nagabhusan; Errandonea, Daniel; Santamaría-Pérez, David; Gomis, O.; Patwe, Sadiqua J.; Manjón Herrera, Francisco Javier; Rodríguez Hernández, Plácida; Muñoz, Alfonso; Tyagi, Avesh Kumar (American Chemical Society, 2015-07-06)
    We report a combined experimental and theoretical study of melilite-type germanate, Sr2ZnGe2O7, under compression. In situ high-pressure X-ray diffraction and Raman scattering measurements up to 22 GPa were complemented ...
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    Exploring the high-pressure behavior of the three known polymorphs of BiPO4: Discovery of a new polymorph 
    Errandonea, Daniel; Gomis, O.; Santamaría Pérez, David; García-Domene, B.; Muñoz, Alfonso; Rodríguez-Hernández, Plácida; Achary, S. N.; Tyagi, A. K.; Popescu, Catalin (American Institute of Physics (AIP), 2015-03-14)
    We have studied the structural behavior of bismuth phosphate under compression. We performed x-ray powder diffraction measurements up to 31.5 GPa and ab initio calculations. Experiments were carried out on different ...
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    Finely tuned temperature-controlled cargo release using paraffin-capped mesoporous silica nanoparticles 
    Aznar Gimeno, Elena; Mondragón Martínez, Laura; Ros-Lis, José Vicente; Sancenón Galarza, Félix; Marcos Martínez, María Dolores; Martínez Mañez, Ramón; Soto Camino, Juan; Pérez Payá, Enrique; AMOROS DEL TORO, PEDRO (Wiley-VCH Verlag, 2011-09-27)
    Trapped: Mesoporous silica nanoparticles were loaded with a fluorescent guest and functionalized with octadecyltrimethoxysilane. The alkyl chains interact with paraffins, which build a hydrophobic layer around the particle ...
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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 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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    Lattice dynamics study of HgGa2Se4 at high pressures 
    Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Manjón Herrera, Francisco Javier; Ortiz, H. M.; Pérez González, E.; López Solano, Javier; Rodríguez Hernández, Plácida; Múñoz, Alfonso; Errandonea, Daniel; Ursaki, V.; Tiginyanu, Ivan (American Chemical Society, 2013-08)
    We report on Raman scattering measurements in mercury digallium selenide (HgGa2Se4) up to 25 GPa. We also performed, for the low-pressure defect-chalcopyrite structure, lattice-dynamics ab initio calculations at high ...
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    Phase behaviour of Ag2CrO4 under compression: Structural, vibrational, and optical properties 
    Santamaría Pérez, David; Bandiello, Enrico; Errandonea, Daniel; Ruiz-Fuertes, Javier; Gomis Hilario, Oscar; Sans, Juan Ángel; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, Plácida; Muñoz, Alfonso (American Chemical Society, 2013-06-13)
    We have performed an experimental study of the crystal structure, lattice dynamics, and optical properties of silver chromate (Ag2CrO4) at ambient temperature and high pressures. In particular, the crystal structure, ...
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    Roberto Matta: Visiones e influencias de un grabador desconocido 
    Moreno Campos, Ana Gabriela (Universitat Politècnica de València, 2014-03-31)
    Roberto Sebastian Matta Echaurren, artista chileno surrealista, se conoce principalmente por su trabajo pictórico. Hoy, con la presente tesis se desea mostrar, explorar, investigar y deducir cómo este artista plástico ...
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    Structural and vibrational study of cubic Sb2O3 under high pressure 
    Pereira, A. L. J.; Gracia, L.; Santamaría-Pérez, D.; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Errandonea, D.; Nalin, M.; Beltrán, A. (American Physical Society, 2012-05-18)
    We report an experimental and theoretical study of antimony oxide (Sb 2O 3) in its cubic phase (senarmontite) under high pressure. X-ray diffraction and Raman scattering measurements up to 18 and 25 GPa, respectively, have ...
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    The effect of extra framework species on the intrinsic negative thermal expansion property of zeolites with the LTA topology 
    Carey, Thomas; Corma Canós, Avelino; Rey Garcia, Fernando; Tang, Chiu C.; Hriljac, Joseph A.; Anderson, Paul A. (Royal Society of Chemistry, 2012)
    [EN] X-Ray powder diffraction studies have been used to measure the thermal expansion properties of three zeolites with the LTA topology and provide details of the underlying structural changes. Siliceous ITQ-29 and ...
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    Triggered release in lipid bilayer-capped mesoporous silica nanoparticles containing SPION using an alternating magnetic field 
    Bringas, Eugenio; Köysüren, Özcan; Quach, Dat V.; Mahmoudi, Morteza; Aznar Gimeno, Elena; Roehling, John D.; Marcos Martínez, María Dolores; Martínez Mañez, Ramón; Stroeve, Pieter (Royal Society of Chemistry, 2012)
    [EN] We report here the on-command cargo controlled delivery using an alternating magnetic field (AMF) from magnetic silica mesoporous supports capped with a lipid bilayer. © 2012 The Royal Society of Chemistry.