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 ...
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 ...
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 ...
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 ...
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 ...
The high-pressure crystal structure, lattice-vibrations HP crystal structure, lattice vibrations, and band , and electronic band structure of BiSbO4 were studied by ab initio simulations. We also performed Raman spectroscopy, ...
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 ...
[EN] Monazite-type BiPO4, LaPO4, CePO4, and PrPO4 have been studied under high pressure by ab initio simulations and Raman spectroscopy measurements in the pressure range of stability of the monazite structure. A good ...
Ruiz-Fuertes, Javier; Friedrich, A.; Gomis, O.; Errandonea, Daniel; Morgenroth, W.; Sans Tresserras, Juan Ángel; Santamaria-Perez, David(American Physical Society, 2015-03-30)
The pressure-induced phase transition of the multiferroic manganese tungstate MnWO4 is studied on single crystals using synchrotron x-ray diffraction and Raman spectroscopy. We observe the monoclinic P2/c to triclinic P ...
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 ...
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 ...
García-Domene, B.; Sans Tresserras, Juan Ángel; Gomis, O.; Manjón Herrera, Francisco Javier; Ortiz, H. M.; Errandonea, Daniel; Santamaría Pérez, David; Martinez-Garcia, D.; Vilaplana Cerda, Rosario Isabel; Pereira, A. L. J.; Morales-Garcia, A.; Rodríguez Hernández, Plácida; Muñoz, Alfonso; Popescu, Catalin; Segura, A.(American Chemical Society, 2014-09-04)
High-pressure powder X-ray diffraction and Raman scattering measurements in cubic bixbyite-type indium oxide (c-In2O3) have been performed at room temperature. On increasing pressure c-In2O3 undergoes a transition to the ...
Pereira, A. L. J.; Gomis, O.; Sans, J. A.; Pellicer-Porres, J.; Manjón Herrera, Francisco Javier; Beltran, A.; Rodríguez-Hernández, Plácida; Muñoz, Alfonso(IOP Publishing: Hybrid Open Access, 2014-06)
We report an experimental and theoretical high-pressure study of the vibrational properties of synthetic monoclinic bismuth oxide (alpha-Bi2O3), also known as mineral bismite. The comparison of Raman scattering measurements ...
[EN] The effects of high pressure on the crystal
structure of orthorhombic (Pnma) perovskite-type cerium
scandate were studied in situ under high pressure by means of
synchrotron X-ray powder diffraction, using a ...
Ruiz Fuertes, Javier; Gomis, O.; León Luis, S. F.; Schrodt, N.; Manjón Herrera, Francisco Javier; Ray, Sudeshna; Santamaría Pérez, David; Sans Tresserras, Juan Ángel; Ortiz, H. M.; Errandonea, Daniel; Ferrer Roca, Chantal; Segura, A.; Martínez García, Domingo; Lavin, V.; Rodríguez Mendoza, U. R.; Muñoz, A.(IOP Publishing: Hybrid Open Access, 2016-01-15)
A structural transformation from the zircon-type structure to an amorphous phase has been found in YVO4:Eu3+ nanoboxes at high pressures above 12.7 GPa by means of x-ray diffraction measurements. However, the pair distribution ...
We have studied CaWO4 under compression using Ne as pressure-transmitting medium at room temperature by means of synchrotron X-ray powder diffraction. We have found that CaWO4 beyond 8.8 GPa transforms from its low-pressure ...
Vilaplana Cerda, Rosario Isabel; Sans Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier; Andrada-Chacón, A.; Sánchez-Benitez, J.; Popescu, C.; Gomis, O.; Pereira, A. L. J.; García-Domene, B.; Rodríguez-Hernández, P.; Muñoz, A.; Daisenberger, D.; Oeckler, O.(Elsevier, 2016-11-15)
We report high-pressure X-ray diffraction and electrical measurements of the topological insulator SnBi2Te4 at room temperature. The pressure dependence of the structural properties of the most stable phase of SnBi2Te4 at ...
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 ...
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 ...
Compresed BiTeBr has been studied from a joint experimental and theoretical perspective. Room-temperature
x-ray diffraction, Raman scattering, and transport measurements at high pressures have been performed in this
layered ...