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Listar por palabra clave "X-Ray Diffraction"

Mostrando ítems 1-11 de 11

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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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, ...
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 ...
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 ...
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 ...
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.