Popescu, Catalin - Resultats de la cerca - Dipòsit Digital de Documents de la UAB

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10 p, 4.8 MB

Structure, mechanical properties and nanocrystallization of (FeCoCrNi)-(B,Si) high-entropy metallic glasses / Panahi, S. Leila (Universitat Politècnica de Catalunya. Departament de Física) ; Fornell Beringues, Jordina (Universitat Autònoma de Barcelona. Departament de Física) ; Popescu, Catalin (ALBA Laboratori de Llum de Sincrotró) ; Pineda, Eloi (Universitat Politècnica de Catalunya. Departament de Física) ; Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ; Bruna, Pere (Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques)
New high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy. Extremely hard materials were obtained by inducing structural relaxation and nanocrystallization in the original amorphous metals. [...]
2022 - DOI (Digital Object Identifier)

10.1016/j.intermet.2021.107432
Intermetallics, Vol. 141 (February 2022) , art. 107432

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7 p, 1.3 MB

Coexistence of structural and magnetic phases in van der Waals magnet CrI3 / Meseguer-Sánchez, Jaume (Universitat de València. Instituto de Ciencia Molecular) ; Popescu, Catalin (ALBA Laboratori de Llum de Sincrotró) ; García-Muñoz, José Luis (Institut de Ciència de Materials de Barcelona) ; Luetkens, Hubertus (Paul Scherrer Institute. Laboratory for Muon Spin Spectroscopy) ; Taniashvili, Grigol (Tbilisi State University. Department of Physics (Georgia)) ; Navarro-Moratalla, Efrén (Universitat de València. Instituto de Ciencia Molecular) ; Guguchia, Zurab (Paul Scherrer Institute. Laboratory for Muon Spin Spectroscopy) ; Santos, Elton J. G. (The University of Edinburgh. Higgs Centre for Theoretical Physics)
CrI3 has raised as an important system to the emergent field of two-dimensional van der Waals magnetic materials. However, it is still unclear why CrI3 which has a ferromagnetic rhombohedral structure in bulk, changed to anti-ferromagnetic monoclinic at thin layers. [...]
2021 - DOI (Digital Object Identifier)

10.1038/s41467-021-26342-4
Nature communications, Vol. 12 (November 2021) , art. 6265

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11 p, 2.2 MB

Stability and nature of the volume collapse of ε-FeO under extreme conditions / Sans, J. A. (Universitat Politècnica de València. Instituto de Diseño para la Fabricación y Producción Automatizada) ; Monteseguro, Virginia (Universitat de València. Institut de Ciència dels Materials) ; Garbarino, G. (European Radiation Synchrotron Facility) ; Gich García, Martí (Institut de Ciència de Materials de Barcelona) ; Cerantola, V. (European Radiation Synchrotron Facility) ; Cuartero, V. (Centro Universitario de la Defensa de Zaragoza) ; Monte, M. (European Radiation Synchrotron Facility) ; Irifune, T. (Tokyo Institute of Technology. Earth-Life Science Institute) ; Muñoz, A. (Universidad de La Laguna. Departamento de Física) ; Popescu, Catalin (ALBA Laboratori de Llum de Sincrotró)
Iron oxides are among the major constituents of the deep Earth's interior. Among them, the epsilon phase of FeO is one of the less studied polymorphs and there is a lack of information about its structural, electronic and magnetic transformations at extreme conditions. [...]
2018 - DOI (Digital Object Identifier)

10.1038/s41467-018-06966-9
Nature communications, Vol. 9 (November 2018) , art. 4554

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9 p, 2.2 MB

High-pressure/high-temperature phase diagram of zinc / Errandonea, Daniel (Universitat de València. Departament de Física Aplicada i Electromagnetisme) ; Macleod, S. G. (University of Edinburgh. Centre for Science at Extreme Conditions) ; Ruiz-Fuertes, J. (Universidad de Cantabria. MALTA Consolider Team) ; Burakovsky, L. (Los Alamos National Laboratory) ; McMahon, M. I. (University of Edinburgh. Centre for Science at Extreme Conditions) ; Wilson, C. W. (Atomic Weapons Establishment) ; Ibañez-Insa, Jordi (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Daisenberger, D. (Harwell Science and Innovation Campus. Diamond Light Source Ltd) ; Popescu, Catalin (ALBA Laboratori de Llum de Sincrotró)
The phase diagram of zinc (Zn) has been explored up to 140 GPa and 6000 K, by combining optical observations, x-ray diffraction, and ab initio calculations. In the pressure range covered by this study, Zn is found to retain a hexagonal close-packed (hcp) crystal symmetry up to the melting temperature. [...]
2018 - DOI (Digital Object Identifier)

10.1088/1361-648X/aacac0
Journal of Physics Condensed Matter, Vol. 30, Núm. 29 (July 2018) , art. 295402

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18 p, 5.1 MB

LiCrO2 under pressure : In-situ structural and vibrational studies / Garg, Alka B. (Homi Bhabha National Institute) ; Errandonea, Daniel (Universitat de València. Departament de Física Aplicada i Electromagnetisme) ; Pellicer Porres, Julio (Universitat de València. Departament de Física Aplicada i Electromagnetisme) ; Martínez García, Domingo (Universitat de València. Departament de Física Aplicada i Electromagnetisme) ; Kesari, Swayam (Bhabha Atomic Research Centre) ; Rao, Rekha (Bhabha Atomic Research Centre) ; Popescu, Catalin (ALBA Laboratori de Llum de Sincrotró) ; Bettinelli, Marco (University of Verona)
The high-pressure behaviour of LiCrO, a compound isostructural to the battery compound LiCoO, has been investigated by synchrotron-based angle-dispersive X-ray powder diffraction, Raman spectroscopy, and resistance measurements up to 41, 30, and 10 Gpa, respectively. [...]
2019 - DOI (Digital Object Identifier)

10.3390/cryst9010002
Crystals, Vol. 9, Issue 1 (January 2019) , art. 2

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