High-pressure optical absorption and Raman scattering measurements have been performed in defect chalcopyrite (DC) CdGa2Se4 up to 22 GPa during two pressure cycles to investigate the pressure-induced order-disorder phase ...
Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Pérez-González, E.; Ortiz, H. M.; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Muñoz, Alfonso; Alonso Gutiérrez, P.; Sanjuán, M.L.; Ursaki, Veacheslav; Tiginyanu, Ivan(American Institute of Physics (AIP), 2013-06-17)
High-pressure Raman scattering measurements have been carried out in ZnGa2Se4 for both tetragonal defect chalcopyrite and defect stannite structures. Experimental results have been compared with theoretical lattice dynamics ...
In this work, we focus on the study of the structural and elastic properties of mercury digallium selenide (HgGa2Se4) which belongs to the family of AB 2 X 4 ordered-vacancy compounds with tetragonal defect chalcopyrite ...
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 ...
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 ...
Gallego-Parra, Samuel; Gomis, O.; Vilaplana Cerda, Rosario Isabel; Ortiz, H.M.; Perez-Gonzalez, E.; Luna Molina, Ramón; Rodríguez-Hernández, Plácida; MUÑOZ, ALFONSO; URSAKI, VEACHESLAV; TIGINYANU, IVAN; Manjón, Francisco-Javier(American Institute of Physics, 2019-03-21)
[EN] Raman scattering measurements have been performed in cadmium digallium sulphide (CdGa2S4) with defect chalcopyrite structure up to 25 GPa in order to study its pressure-induced phase transitions. These measurements ...
Vilaplana Cerda, Rosario Isabel; Robledillo, M.; Gomis Hilario, Oscar; Sans, J.A.; Manjón Herrera, Francisco Javier; Pérez-González, E.; Rodríguez-Hernández, P.; Muñoz, Alfonso; Tiginyanu, Ivan; Ursaki, Veacheslav(American Institute of Physics (AIP), 2013-03-07)
In this work, we report on high-pressure Raman scattering measurements in mercury digallium sulfide (HgGa2S4) with defect chalcopyrite structure that have been complemented with lattice dynamics ab initio calculations. Our ...
Errandonea, Daniel; Kumar, R.S.; Gomis Hilario, Oscar; Manjón Herrera, Francisco Javier; Ursaki, Veacheslav; Tiginyanu, Ivan(American Institute of Physics (AIP), 2013-12-18)
We report on high-pressure x-ray diffraction measurements up to 19.8¿GPa in zinc digallium telluride (ZnGa2Te4) at room temperature. An irreversible structural phase transition takes place at pressures above 12.1¿GPa and ...