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Browsing by Author "Manjón Herrera, Francisco Javier"

Now showing items 1-20 of 79

Análisis del proceso de búsqueda de información en internet en conjuntos de usuarios diferenciados

Leiva Aguilar, Alba (2017-02-13)

[EN] In the last decade internet information foraging has become a daily event for people around the world, and it is an activity that traverses so many areas of our lives, be it personal or professionally. It is important ...
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 ...
Broadband, site selective and time resolved photoluminescence spectroscopic studies of finely size-modulated Y2O3:Eu3+ phosphors synthesized by a complex based precursor solution method

Ray, Sudeshna; León-Luis, Sergio Fabián; Manjón Herrera, Francisco Javier; Mollar García, Miguel Alfonso; Gomis Hilario, Oscar; Rodríguez-Mendoza, Ulises Ruyman; Agouram, Said; Muñoz, Alfonso; Lavín, Victor (Elsevier, 2014-01)

Undoped and Eu3+-doped cubic yttria (Y2O3) nanophosphors of good crystallinity, with selective particle sizes ranging between 6 and 37 nm and showing narrow size distributions, have been synthesized by a complex-based ...
Compressibility systematics of calcite-type borates : An experimental and theoretical structural study on ABO3 (A = Al, Sc, Fe and In)

Santamaría Pérez, David; Gomis Hilario, Oscar; Sans, Juan Ángel; Ortiz, H. M.; Vegas, Ángel; Errandonea, Daniel; Ruiz-Fuertes, Javier; Martínez-García, Domingo; García-Domene, B.; Pereira, ALJ; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, Placida; Muñoz, A.; Piccinelli, F.; Bettinelli, M.; Popescu, C. (American Chemical Society, 2014-02-27)

The structural properties of calcite-type orthoborates ABO(3) (A = Al, Fe, Sc, and In) have been investigated at high pressures up to 32 GPa. They were studied experimentally using synchrotron powder X-ray diffraction and ...
Crystal Chemistry of CdIn2S4, MgIn2S4, and MnIn2S4 thiospinels under high pressure

Santamaría Pérez, David; Amboage, Mónica; Manjón Herrera, Francisco Javier; Errandonea, Daniel; Muñoz, Alfonso; Rodríguez Hernández, Plácida; Mújica, Andrés; Radescu, Silvana; Ursaki, Veacheslav; Tinginyanu, Ivan (American Chemical Society, 2012-07-05)

We report X-ray diffraction measurements in CdIn2S4, MgIn2S4, and MnIn2S4 thiospinels at room temperature and high pressures. The pressure dependences of the structural parameters have been determined and compared to those ...
Crystal structure of sinhalite MgAlBO4 under high pressure

Santamaría Pérez, David; Errandonea, Daniel; Gomis, O.; Sans Tresserras, Juan Ángel; Pereira, A. L. J.; Manjón Herrera, Francisco Javier; Popescu, Catalin; Rodríguez Hernández, Plácida; Muñoz, Alfonso (American Chemical Society, 2015-03-26)

We report on high-pressure angle-dispersive X-ray diffraction data up to 27 GPa for natural MgAlBO4 sinhalite mineral and ab initio total energy calculations. The experimental bulk modulus of sinhalite is B-0 = 171(3) GPa ...
Diseño y cálculo de una instalación para calefacción mediante suelo radiante y ACS en una vivienda unifamiliar

Martín Valladolid, Iván (2014-09-11)

La principal motivación para realizar este proyecto, es la implantación de una tecnología que permita responder a las nuevas normativas, así como, las necesidades actuales de la sociedad. Para ello nos centraremos en el ...
Diseño y contrucción de un autómata encargado del análisis de planitud y espesor de las bielas en la planta de American Axle & Manufacturing en Valencia

García Dasi, Alejandro (2018-10-29)

[ES] El objetivo del proyecto es la implementación en planta de un automata que realice la medición y análisis de la planitud y espesor de las bielas. Este proceso actualmente se esta realizando manualmente. Automatizando ...
Effect of pressure on La-2(WO4)(3) with a modulated scheelite-type structure

Sabalisck, N.P.; Lopez Solano, Javier; Guzmán-Afonso, C.; Santamaría Pérez, David; González-Silgo, C.; Mújica, Andrés; Muñoz, Alfonso; Rodríguez Hernández, Plácida; Radescu, Silvana; Vendrell, X.; Mestres, L.; Sans Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier (American Physical Society, 2014-05-27)

We have studied the effect of pressure on the structural and vibrational properties of lanthanum tritungstate La2(WO4)3. This compound crystallizes under ambient conditions in the modulated scheelite-type structure known ...
Effects of high-pressure on the structural, vibrational, and electronic properties of monazite-type PbCrO4

Bandiello, E.; Errandonea, D.; Martinez-Garcia, D.; Santamaria-Perez, D.; Manjón Herrera, Francisco Javier (American Physical Society, 2012-01-12)

We have performed an experimental study of the crystal structure, lattice dynamics, and optical properties of PbCrO 4 (the mineral crocoite) at ambient and high pressures. In particular, the crystal structure, Raman-active ...
El teléfono móvil inteligente: una herramienta para el estudio de la acústica experimental

Giménez Valentín, Marcos Herminio; Salinas Marín, Isabel; Monsoriu Serra, Juan Antonio; Cuenca Gotor, Vanesa Paula; Manjón Herrera, Francisco Javier; Sans Tresserras, Juan Ángel; Gómez Tejedor, José Antonio (Editorial Universitat Politècnica de València, 2015-07-10)

[EN] In this work, we detail a new application of the use of the smartphone in the laboratory of Physics, in order to show the students that new technologies and the Physics’ basic principles are compatible. From the ...
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 ...
Enhanced hydrothermal resistance of Y-TZP ceramics through colloidal processing

Rayón Encinas, Emilio; Moreno, R.; Alcazar, C.; Salvador Moya, Mª Dolores; Manjón Herrera, Francisco Javier; Jimenez-Pique, E.; Llanes, L. (Wiley, 2013-04)

Two commercial zirconia powders with 3mol% of yttria (TZ3YE and TZ3YS, labeled as ZE and ZS, respectively) supplied by Tosoh (Japan) were used for this study. Maximum colloidal stability for ZE was achieved by dispersing ...
Estudio de compuestos As2X3 bajo presión

Cuenca Gotor, Vanesa Paula (2019-09-02)

[ES] El estudio de la materia sometida a condiciones extremas de presión y/o temperatura nos permite ampliar nuestros conocimientos sobre sus propiedades estructurales, elásticas, vibracionales, ópticas, eléctricas y ...
Estudio de polimorfismo en materiales moleculares capaces de atrapar gases nobles

Ilyin, Dmytro (2019-11-22)

[ES] En esta memoria se detalla el estudio de la claudetita mediante espectroscopía Raman a altas presiones, que ha sido realizado en el Laboratorio de Optoelectrónica y Semiconductores del departamento de Física Aplicada ...
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 ...
Experimental and theoretical investigations on the polymorphism and metastability of BiPO4

Achary, S. N.; Errandonea, Daniel; Muñoz, Alfonso; Rodríguez Hernández, Plácida; Manjón Herrera, Francisco Javier; Krishna, P. S. R.; Patwe, S. J.; Grover, V.; Tyagi, A. (Royal Society of Chemistry, 2013)

In this work we report the metastability and the energetics of the phase transitions of three different polymorphs of BiPO4, namely trigonal (Phase-I, space group P3(1)21), monoclinic monazite-type (Phase-II, space group ...
Experimental and Theoretical Studies on alfa-In2Se3 at High Pressure

Vilaplana Cerda, Rosario Isabel; Gallego-Parra, Samuel; Jorge-Montero, A.; Rodríguez-Hernández, Plácida; Muñoz, Alfonso; Errandonea, Daniel; Segura, Alfredo; Manjón, Francisco-Javier (American Chemical Society, 2018)

[EN] alpha(R)-In2Se3 has been experimentally and theoretically studied under compression at room temperature by means of X-ray diffraction and Raman scattering measurements as well as by ab initio total-energy and ...
HgGa2Se4 under high pressure: an optical absorption study

Gomis, O.; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Ruiz-Fuertes, Javier; Pérez-González, E.; López-Solano, J.; Bandiello, E.; Errandonea, Daniel; Segura, Alfredo; Rodríguez-Hernández, Placida; Muñoz, A.; Ursaki, Veacheslav; Tiginyanu, Ivan M. (Wiley, 2015-09)

High-pressure optical absorption measurements have been performed in defect chalcopyrite HgGa2Se4 to investigate the influence of pressure on the bandgap energy and its relation with the pressure-induced order-disorder ...
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 ...