Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Maria Poienar"'
Publikováno v:
Materials, Vol 17, Iss 20, p 4965 (2024)
In this study, we report the growth and comprehensive spectroscopic analysis of TmF3-doped CaF2 crystals, grown using the vertical Bridgman method. The optical absorption and photoluminescence properties of both trivalent (Tm3+) and divalent (Tm2+) t
Externí odkaz:
https://doaj.org/article/1635f9a1d6674181a08ea7aa9cbf14c9
Autor:
Paulina Vlazan, Catalin Nicolae Marin, Iosif Malaescu, Gabriela Vlase, Titus Vlase, Maria Poienar, Paula Sfirloaga
Publikováno v:
Applied Sciences, Vol 14, Iss 4, p 1546 (2024)
The synthesis, thermal behavior and electrical properties of a series of undoped and 1% Ga- or Y-doped lanthanum manganite compounds, obtained via the sol–gel technique, are reported. Scanning electron microscopy (SEM/EDX), X-ray diffraction (XRD)
Externí odkaz:
https://doaj.org/article/7040d76c29cf42a08c38e241d0d2ad11
Publikováno v:
Energies, Vol 16, Iss 3, p 1212 (2023)
In response to the escalating global energy requests and the need to address them in a sustainable manner, researchers have identified hydrogen as an energy vector that provides a practical way to store and use energy from renewable sources. To make
Externí odkaz:
https://doaj.org/article/07101ea954ca4b43badb5a8fdceb868d
Autor:
Maria Poienar, Paula Svera, Bogdan-Ovidiu Taranu, Catalin Ianasi, Paula Sfirloaga, Gabriel Buse, Philippe Veber, Paulina Vlazan
Publikováno v:
Crystals, Vol 12, Iss 12, p 1803 (2022)
Herein, we present the investigation of catalytical and fluorescence properties for Ni11(HPO3)8(OH)6 materials obtained through a hydrothermal approach. As part of the constant search for new materials that are both cost effective and electrocatalyti
Externí odkaz:
https://doaj.org/article/ef9cd0ef7a4347c4b6cb54426289109d
Autor:
Maria Poienar, Matthias Josef Gutmann, Gheorghe Lucian Pascut, Václav Petříček, Gavin Stenning, Paulina Vlazan, Paula Sfirloaga, Carsten Paulmann, Martin Tolkiehn, Pascal Manuel, Philippe Veber
Publikováno v:
Materials, Vol 15, Iss 22, p 8059 (2022)
Iron phosphate materials have attracted a lot of attention due to their potential as cathode materials for lithium-ion rechargeable batteries. It has been shown that lithium insertion or extraction depends on the Fe mixed valence and reduction or oxi
Externí odkaz:
https://doaj.org/article/17609cfda5a040928382188e139b9173
Autor:
Maria Poienar, Julie Bourgeois, Christine Martin, Maryvonne Hervieu, Françoise Damay, Gaston Garbarino, Michael Hanfland, Thomas Hansen, François Baudelet, Jean Louis Bantignies, Patrick Hermet, Julien Haines, Jérôme Rouquette
Publikováno v:
Crystals, Vol 8, Iss 5, p 184 (2018)
The high-pressure behavior of LuFe2O4 is characterized based on synchrotron X-ray diffraction and neutron diffraction, resistivity measurements, X-ray absorption spectroscopy and infrared spectroscopy studies. The results obtained enabled us to propo
Externí odkaz:
https://doaj.org/article/be19201e36564389b5803c2b854600c3
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 147:11839-11855
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5cc7a3920039c117fad620f555313e90
https://doi.org/10.1007/s10973-022-11435-z
https://doi.org/10.1007/s10973-022-11435-z
Publikováno v:
Brazilian Journal of Chemical Engineering.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e446631014a2248b16571805ae2e24a7
https://doi.org/10.1007/s43153-022-00297-5
https://doi.org/10.1007/s43153-022-00297-5
Publikováno v:
Surfaces and Interfaces. 39:102881
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af84c121a8fa17d2b8f7b26d2322bfab
https://doi.org/10.1016/j.surfin.2023.102881
https://doi.org/10.1016/j.surfin.2023.102881
Publikováno v:
Processes; Volume 10; Issue 12; Pages: 2688
LaMnO3 and 1% Pd-, Ag-, or Y-doped perovskite type nanomaterials were prepared by the sol-gel method, followed by heat treatment at a low temperature (600 °C for 6 h). The investigation through X-ray diffraction and FT-IR spectroscopy indicated that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee7817124a57ffc070e3a7a7b5c62fb2
https://doi.org/10.3390/pr10122688
https://doi.org/10.3390/pr10122688