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Browsing by Subject "High-pressure"

Now showing items 1-20 of 24

Compressibility and structural stability of ultra-incompressible bimetallic interstitial carbides and nitrides

Errandonea, D.; Ruiz-Fuertes, J.; Sans, J. A.; Santamaría-Perez, D.; Gomis Hilario, Oscar; Gómez, A.; Sapiña, F. (American Physical Society, 2012-04-06)

We have investigated by means of high-pressure x-ray diffraction the structural stability of Pd 2Mo 3N, Ni 2Mo 3C 0.52N 0.48, Co 3Mo 3C 0.62N 0.38, and Fe 3Mo 3C. We have found that they remain stable in their ambient-pressure ...
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 ...
Experimental and Theoretical Study of B2X3 Sesquichalcogenides under Extreme Conditions

Gallego Parra, Samuel (Universitat Politècnica de València, 2023-01-23)

[ES] Los sesquicalcogenuros con estequiometria B2X3, con A = Al, Ga e In y X = S, Se y Te, han recibido gran atención a lo largo de los últimos años, en particular en como modificarlos para obtener nuevas estructuras con ...
Experimental and theoretical study of dense YBO3 and the influence of non-hydrostaticity.

Turnbull, Robin; Errandonea, Daniel; Cuenca-Gotor, Vanesa Paula; Sans-Tresserras, Juan Ángel; Gomis, O.; Gonzalez, Alfonso; Rodríguez-Hernandez, Placida; Popescu, Catalin; Bettinelli, Marco; Mishra, Karuna K.; Manjón, Francisco-Javier (Elsevier, 2021-01-05)

[EN] YBO3 is used in photonics applications as a host for red phosphors due to its desirable chemical stability, high quantum efficiency and luminescence intensity. Despite its fundamental thermodynamic nature, the isothermal ...
GdBO3 and YBO3 crystals under compression

Turnbull, Robin; Errandonea, Daniel; Sans-Tresserras, Juan Ángel; Cuenca-Gotor, Vanesa Paula; Vilaplana Cerda, Rosario Isabel; Ibáñez, Jordi; Popescu, Catalin; Szczeszak, Agata; Lis, Stefan; Manjón, Francisco-Javier (Elsevier, 2021-06-15)

[EN] High-pressure X-ray diffraction studies on nanocrystals of the GdBO3 and YBO3 rare-earth orthoborates are herein reported up to 17.4(2) and 13.4(2) GPa respectively. The subsequent determination of the room- temperature ...
High-pressure characterization of multifunctional CrVO4

Botella, P.; López-Moreno, S.; Errandonea, D.; Manjón, Francisco-Javier; Sans-Tresserras, Juan Ángel; Vie, D.; Vomiero, A. (IOP Publishing, 2020-09-09)

[EN] The structural stability and physical properties of CrVO(4)under compression were studied by x-ray diffraction, Raman spectroscopy, optical absorption, resistivity measurements, andab initiocalculations up to 10 GPa. ...
Inactivación por altas presiones hidrostaticas de Rhodotorula glutinis y Penicillium aurantiogriseum en medio referencia agua peptona

TORRES BELLO, EDWIN FABIAN (Universitat Politècnica de València, 2013-04-17)

[ES] La tecnología de Altas Presiones Hidrostáticas (APH) es la tecnología no térmica de conservación de alimentos más desarrollada comercialmente, caracterizada por conseguir niveles de inactivación de microorganismos ...
Isostructural second-order phase transition of b-Bi2O3 at high pressures: an experimental and theoretical study

Pereira, Andre L. J.; Sans Tresserras, Juan Ángel; Vilaplana Cerda, Rosario Isabel; Gomis, O.; Manjón Herrera, Francisco Javier; Rodriguez-Hernandez, Placida; Muñoz, Alfonso; Popescu, Catalin; Beltran, Armando (American Chemical Society, 2014-10-09)

We report a joint experimental and theoretical study of the structural and vibrational properties of synthetic sphaerobismoite (beta-Bi2O3) at high pressures in which room-temperature angle-dispersive X-ray diffraction ...
Joint experimental and theoretical study of bulk Y2O3 at high pressure

Pereira, A.L.J.; Sans-Tresserras, Juan Ángel; Gomis, O.; Santamaría-Pérez, D.; Ray, S.; Rodríguez-Hernández, P.; Godoy-Jr., A.; da Silva-Sobrinho, A.S.; Muñoz, A.; Popescu, C.; Manjón, Francisco-Javier (Elsevier, 2023-06)

[EN] We report a joint experimental and theoretical study of the structural and vibrational properties of C-type bulk Y2O3 under hydrostatic compression. The combination of high-pressure X-ray diffraction and Raman scattering ...
Near-intrinsic energy resolution for 30-662 keV gamma rays in a high pressure xenon electroluminescent TPC

Alvarez, V.; Borges, F. I. G. M.; Carcel, S.; Castel, J.; Cebrian, S.; Cervera, A.; Conde, C. A. N.; Dafni, T.; Dias, T. H. V. T.; Diaz, J.; Esteve Bosch, Raul; Marí Romero, Antonio Francisco; Mora Mas, Francisco José; Palma, R.; Pérez Aparicio, José Luis; Toledo Alarcón, José Francisco (Elsevier, 2013-04-21)

We present the design, data and results from the NEXT prototype for Double Beta and Dark Matter (NEXT-DBDM) detector, a high-pressure gaseous natural xenon electroluminescent time projection chamber (TPC) that was built ...
On the Aerothermal Flow Field in a Transonic HP Turbine Stage with a Multi-Profile LP Stator Vane

Lavagnoli, Sergio (Universitat Politècnica de València, 2012-11-13)

The quest for higher performances and durability of modern aero-engines requires the understanding of the complex aero-thermal flow experienced in a multi-row environment. In particular, the high and low pressure turbine ...
Optical absorption of defect chalcopyrite and defect stannite ZnGa2Se4 under high pressure

Gomis, O.; Vilaplana Cerda, Rosario Isabel; Pérez-González, E.; Ruiz-Fuertes, J.; Rodríguez-Hernández, P.; Muñoz, A.; Errandonea, D.; Segura. A.; Santamaría-Pérez, D.; Alonso-Gutiérrez, P.; Sanjuan, M.L.; Tiginyanu, I.M.; Ursaki, V.V.; Manjón, Francisco-Javier (Elsevier, 2023-04-05)

[EN] Optical absorption measurements at high pressure have been performed in two phases of the ordered -vacancy compound (OVC) ZnGa2Se4: defect stannite (DS) and defect chalcopyrite (DC). The direct bandgap energy of both ...
Ordered helium trapping and bonding in compressed arsenolite: Synthesis of As4O6 2He

Sans Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier; Popescu, Catalin; Cuenca Gotor, Vanesa Paula; Gomis, Oscar; Muñoz, Alfonso; Rodríguez Hernández, Plácida; Contreras García, Julia; Pellicer Porres, Julio; Pereira, A.L.J.; Santamaría Pérez, David; Segura, Alfredo (American Physical Society, 2016-02)

Compression of arsenolite has been studied from a joint experimental and theoretical point of view. Experiments on this molecular solid at high pressures with different pressure-transmitting media have been interpreted ...
Pressure-induced hypercoordination of iodine and dimerization of I 2 O 6 H in strontium di-iodate hydrogen-iodate (Sr(IO 3 ) 2 HIO 3 )

Errandonea, D.; Helmy Hassan Osman, Hussien; Turnbull, R.; Diaz-Anichtchenko, D.; Liang, A.; Sanchez-Martin, J.; Popescu, C.; Jiang, D.; Song, H.; Wang, Y.; Manjón, Francisco-Javier (Elsevier, 2024-06)

[EN] In this work, we report evidence of pressure -induced changes in the crystal structure of Sr(IO 3 ) 2 HIO 3 connected to changes the coordination of the iodine atom and the of the configuration of HIO 3 and IO 3 units. ...
Size-Dependent High-Pressure Behavior of Pure and Eu3+-Doped Y2O3 Nanoparticles: Insights from Experimental and Theoretical Investigations

Pereira, Andre Luis de Jesus; Sans, Juan Ángel; Gomis, O.; Santamaria-Pérez, David; Ray, Sudeshna; Godoy, Armstrong; da Silva-Sobrinho, Argemiro Soares; Rodríguez-Hernández, Placida; Muñoz, Alfonso; Popescu, Catalin; Manjón, Francisco-Javier (MDPI AG, 2024-04)

[EN] We report a joint high-pressure experimental and theoretical study of the structural, vibrational, and photoluminescent properties of pure and Eu3+-doped cubic Y2O3 nanoparticles with two very different average particle ...
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 ...
Structural and vibrational behavior of cubic Cu1.80(3)Se cuprous selenide, berzelianite, under compression

Chulia-Jordan, R.; Santamaria-Perez, D.; Pereira, A. L. J.; Garcia-Domene, B.; Vilaplana Cerda, Rosario Isabel; Sans-Tresserras, Juan Ángel; Martinez-Garcia, D.; Morales-Garcia, A.; Popescu, C.; Muehle, C.; Jansen, M.; Manjón, Francisco-Javier (Elsevier, 2020-07-25)

[EN] We have performed an experimental study of the crystal structure and lattice dynamics of cubic Cu1.80(3)Se at ambient temperature and high pressures. Two reversible phase transitions were found at 2.9 and 8.7 GPa. The ...
Structural and vibrational properties of CdAl2S4 under high pressure: Experimental and theoretical approach

Sans Tresserras, Juan Ángel; Santamaría Pérez, David; Popescu, Catalin; Gomis, O.; Manjón Herrera, Francisco Javier; Vilaplana Cerda, Rosario Isabel; Muñoz, Alfonso; Rodríguez Hernández, Plácida; Ursaki, Veacheslav; Tiginyanu, Ivan (American Chemical Society, 2014-07-17)

The behavior of defect chalcopyrite CdAl2S4 at high pressures and ambient temperature has been investigated in a joint experimental and theoretical study. High-pressure X-ray diffraction and Raman scattering measurements ...
Structural and vibrational study of pseudocubic CdIn2Se4 under compression

Santamaría Pérez, David; Gomis, O.; Pereira, A. L. J.; Vilaplana Cerda, Rosario Isabel; Popescu, Catalin; Sans Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier; Rodríguez Hernández, Plácida; Muñoz, Alfonso; Ursaki, Vladislav V.; Tiginyanu, Ion M. (American Chemical Society, 2014-11-20)

We report a comprehensive experimental and theoretical study of the structural and vibrational properties of a-CdIn2Se4 under compression. Angle-dispersive synchrotron X-ray diffraction and Raman spectroscopy evidence that ...