Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Carlos Díaz-Guerra"'
Autor:
Juliana Heiniger-Schell, Krish Bharuth-Ram, Kimara Naicker, Vusumuzi Masondo, Thien Thanh Dang, Marianela Escobar, Carlos Díaz-Guerra, Georg Marschick, Hilary Masenda, Haraldur P. Gunnlaugsson, Bingcui Qi, Iraultza Unzueta, Sveinn Ólafsson, Rajdeep Adhikari, Gerrard Peters, Deena Naidoo, Peter Schaaf, Dmitry Zyabkin, Karl Johnston, Sven Becker, Gerhard Jakob
Publikováno v:
Crystals, Vol 13, Iss 5, p 724 (2023)
Emission 57Fe Mössbauer spectroscopy (eMS), following the implantation of radioactive 57Mn+ ions, has been used to study the temperature dependence of the hyperfine magnetic field at Fe sites in Ba-doped BiFeO3 (BFO) thin films. 57Mn β decays (t1/2
Externí odkaz:
https://doaj.org/article/a5c24160b05142e2b199f397f7e4f6e0
Autor:
Juliana Schell, Dmitry Zyabkin, Krish Bharuth-Ram, João N. Gonçalves, Carlos Díaz-Guerra, Haraldur P. Gunnlaugsson, Aitana Tarazaga Martín-Luengo, Peter Schaaf, Alberta Bonanni, Hilary Masenda, Thien Thanh Dang, Torben E. Mølholt, Sveinn Ólafsson, Iraultza Unzueta, Roberto Mantovan, Karl Johnston, Hafliði P. Gíslason, Petko B. Krastev, Deena Naidoo, Bingcui Qi
Publikováno v:
Crystals, Vol 12, Iss 7, p 942 (2022)
Van der Waals α-MoO3 samples offer a wide range of attractive catalytic, electronic, and optical properties. We present herein an emission Mössbauer spectroscopy (eMS) study of the electric-field gradient (EFG) anisotropy in crystalline free-standi
Externí odkaz:
https://doaj.org/article/df04a760a38943e5bf402682fc167b61
Publikováno v:
Materials, Vol 15, Iss 9, p 3246 (2022)
Spent batteries recycling is an important way to obtain low-cost graphite. Nevertheless, the obtaining of crystalline graphite with a rather low density of defects is required for many applications. In the present work, high-quality graphites have be
Externí odkaz:
https://doaj.org/article/f9474cc5df4f4ff2b0975b2e746ca457
Autor:
Ignacio Lopez-Quintas, Esther Rebollar, David Ávila-Brande, Jesús G. Izquierdo, Luis Bañares, Carlos Díaz-Guerra, Ana Urbieta, Marta Castillejo, Rebeca de Nalda, Margarita Martín
Publikováno v:
Nanomaterials, Vol 10, Iss 11, p 2229 (2020)
Nanostructured thin films of Co-doped zinc sulfide were synthesized through femtosecond pulsed laser deposition. The scheme involved ablation of physically mixed Co and ZnS with pairs of ultrashort pulses separated in time in the 0–300 ps range. In
Externí odkaz:
https://doaj.org/article/46db4aeac4af4f8f849226e2efebacbd
Autor:
D. Nd. Faye, João Salgado Cabaço, João P. Araújo, Daniela R. Pereira, Rodrigo Mateus, Sérgio Ricardo Magalhães, Katharina Lorenz, Marco Peres, Carlos Díaz-Guerra, Eduardo Alves
Publikováno v:
CrystEngComm. 23:2048-2062
The application of conventional Williamson–Hall (WH) plot analysis to crystals often results in broadening not proportional to the scattering length vector. Several reasons may influence the broadening such as composition or strain heterogeneities,
Autor:
M. Bouachri, M. Oubakalla, H. El Farri, Carlos Díaz-Guerra, J. Mhalla, J. Zimou, A. El-Habib, M. Beraich, K. Nouneh, M. Fahoume, Paloma Fernández, A. Ouannou
Publikováno v:
Optical Materials. 135:113215
Autor:
J. G. Correia, Carlos Díaz-Guerra, Katharina Lorenz, Eduardo Alves, Marco Peres, Ana G. Silva, José G. Marques, Daniela R. Pereira, Sérgio Ricardo Magalhães
Publikováno v:
Acta Materialia. 199:425-428
Spent batteries recycling is an important way to obtain low-cost graphite. Nevertheless, the obtaining of crystalline graphite with a rather low density of defects is required for many applications. In the present work, high-quality graphites have be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d754b3f8561fcce41b43a6712d0c59b
https://doi.org/10.20944/preprints202203.0347.v1
https://doi.org/10.20944/preprints202203.0347.v1
Autor:
Ana G. Silva, Susana Cardoso, Carlos Díaz-Guerra, Sérgio Ricardo Magalhães, J. G. Correia, Katharina Lorenz, Paulo P. Freitas, Eduardo Alves, Daniela R. Pereira, Marco Peres, José G. Marques
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 478:290-296
Ion implantation of oxygen in MoO3 lamellar crystals allows tuning their electrical conductivity by defect formation. X-ray diffraction (XRD) is a particularly sensitive technique to study such defects that cause changes in the lattice parameters and
Autor:
Eduardo Alves, Carlos Díaz-Guerra, José G. Marques, J. G. Correia, Ana G. Silva, Sérgio Ricardo Magalhães, Katharina Lorenz, Marco Peres, Daniela R. Pereira
Publikováno v:
Acta Materialia. 169:15-27
α-MoO3 lamellar crystals are implanted with 170 keV oxygen ions at room temperature and with fluences between 1 × 1012 cm−2 and 1 × 1017 cm−2, in order to modify the electrical and structural properties of the crystals. A controllable and sign