Search Results - "Teodorescu, Cristian M."

Reversible oxidation of ethylene on ferroelectric BaTiO3(001): An X-ray photoelectron spectroscopy study by Iancu, Alexandru-Cristi, Nicolaev, Adela, Apostol, Nicoleta G., Abramiuc, Laura E., Teodorescu, Cristian M.

“…Adsorption and desorption of ethylene on BaO-terminated (001) barium titanate are investigated by X-ray photoelectron spectroscopy. Carbon is found in an…”
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Aging phenomena and wettability control of plasma deposited carbon nanowall layers by Vizireanu, Sorin, Ionita, Maria D., Ionita, Rosini E., Stoica, Silviu D., Teodorescu, Cristian M., Husanu, Marius A., Apostol, Nicoleta G., Baibarac, Mihaela, Panaitescu, Denis, Dinescu, Gheorghe

“…This paper reports on the aging of carbon nanowalls (CNW) and modification of their wettability by the storage time, growth conditions, and post‐fabrication…”
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Catalytic Hydrotreatment of Humins Waste over Bifunctional Pd-Based Zeolite Catalysts by Magdi El Fergani, Natalia Candu, Iunia Podolean, Bogdan Cojocaru, Adela Nicolaev, Cristian M. Teodorescu, Madalina Tudorache, Vasile I. Parvulescu, Simona M. Coman

“…The catalytic hydrotreatment of humins, the solid byproduct produced from the conversion of C6 sugars (glucose, fructose) to 5-hydroxymethylfurfural (HMF),…”
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Kittel’s model for ferromagnetic domains, revised and completed, including the derivation of the magnetic hysteresis by Teodorescu, Cristian M.

“…•Kittel’s theory of ferromagnetic domains, revised, presented in detail, in SI units.•Kittel’s scaling law (power 1/2) is retrieved for high sample…”
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Two dimensional landscape of ferromagnetic domains and the resulting magnetization curves by Teodorescu, Cristian M.

“…Recently, Kittel’s theory of ferromagnetic domains in thin films in one dimension, i. e. with the domains extended infinitely over one in-plane direction and…”
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Atomic structure and reactivity of ferromagnetic Fe deposited on Si(001) by Gheorghe, Nicoleta G., Husanu, Marius A., Lungu, George A., Costescu, Ruxandra M., Macovei, Dan, Teodorescu, Cristian M.

“…This study presents a correlated study of structural, reactivity, and magnetic properties of ultrathin Fe layers grown on Si(001) by molecular beam epitaxy in…”
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Spin asymmetry originating from densities of states: Criterion for ferromagnetism, structures and magnetic properties of 3d metals from crystal field based DOSs by Teodorescu, Cristian M.

“…[Display omitted] •Band ferromagnetism theory, correct evaluation of electron energies in sub-bands.•A new criterion for ferromagnetism is derived, without the…”
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Corrigendum to “Spin asymmetry originating from densities of states: Criterion for ferromagnetism, structures and magnetic properties of 3d metals from crystal field based DOSs” [Results Phys. 25 (2021) 104241(10pp)] by Teodorescu, Cristian M.

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Room Temperature Ferromagnetic, Anisotropic, Germanium Rich FeGe(001) Alloys by Lungu, George A, Apostol, Nicoleta G, Stoflea, Laura E, Costescu, Ruxandra M, Popescu, Dana G, Teodorescu, Cristian M

“…Ferromagnetic Fe Ge with = 2%-9% are obtained by Fe deposition onto Ge(001) at high temperatures (500 °C). Low energy electron diffraction (LEED) investigation…”
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CO adsorption and oxidation at room temperature on graphene synthesized on atomically clean Pt(001) by Apostol, Nicoleta G., Bucur, Ioana C., Lungu, George A., Tache, Cristian A., Teodorescu, Cristian M.

“…Graphene deposited on Pt(001) provides a good heterosurface for adsorption and oxidation of carbon monoxide at room temperature. [Display omitted] •Monolayer…”
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Spin asymmetry of O 2p –related states in SrTiO3(001) by Popescu, Dana G, Nicolaev, Adela, Costescu, Ruxandra M, Borcan, Larisa E, Lungu, George A, Tache, Cristian A, Hușanu, Marius A, Teodorescu, Cristian M

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Degenerated TiO2 Semiconductor Modified with Ni and Zn as Efficient Photocatalysts for the Water Splitting Reaction by Neaţu, Florentina, Abramiuc, Laura E., Trandafir, Mihaela M., Negrea, Raluca F., Florea, Mihaela, Teodorescu, Cristian M., Neaţu, Stefan

“…The development of robust, safe, cost‐effective and efficient photocatalytic systems for water splitting should take into account the presence of a proper and…”
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Surface versus volume effects in luminescent ceria nanocrystals synthesized by an oil-in-water microemulsion method by Tiseanu, Carmen, Parvulescu, Vasile I, Boutonnet, Magali, Cojocaru, Bogdan, Primus, Philipp A, Teodorescu, Cristian M, Solans, Conchita, Sanchez Dominguez, Margarita

“…Pure and europium (Eu(3+)) doped cerium dioxide (CeO(2)) nanocrystals have been synthesized by a novel oil-in-water microemulsion reaction method under soft…”
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Band bending in Au/Pb(Zr,Ti)O3 investigated by X-ray photoelectron spectroscopy: Dependence on the initial state of the film by Apostol, Nicoleta G., Stoflea, Laura E., Lungu, George A., Tanase, Liviu C., Chirila, Cristina, Frunza, Ligia, Pintilie, Lucian, Teodorescu, Cristian M.

“…This work presents a systematic investigation by X-ray photoelectron spectroscopy of the mechanisms of interface formation and band bending for Au/Pb(Zr,Ti)O3…”
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Nanoscopic correlations from curve fitting of photoelectron spectromicroscopy data cubes of lead zirconate titanate films by Abramiuc, Laura E., Tănase, Liviu C., Barinov, Alexei, Chirilă, Cristina F., Teodorescu, Cristian M.

“…[Display omitted] •Automatic curve fitting procedure for data cubes obtained in photoelectron spectromicroscopy.•Analysis of correlations between main fitting…”
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Schottky barrier versus surface ferroelectric depolarization at Cu/Pb(Zr, Ti)O3 interfaces by Stoflea, Laura E., Apostol, Nicoleta G., Chirila, Cristina, Trupina, Lucian, Negrea, Raluca, Pintilie, Lucian, Teodorescu, Cristian M.

“…The band bending at Cu/PZT(001) interfaces is investigated by X-ray photoelectron spectroscopy (XPS) for a PZT(001) layer which exhibits initial outwards…”
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Epitaxial ferromagnetic samarium and samarium silicide synthesized on Si(001) by Costescu, Ruxandra M., Gheorghe, Nicoleta G., Husanu, Marius A., Lungu, George A., Macovei, Dan, Pintilie, Ioana, Popescu, Dana G., Teodorescu, Cristian M.

“…Samarium is deposited on Si(001) at various temperatures (room temperature to 400 °C), and the surface structure, interface reactivity, electron configuration,…”
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Chemical Imaging of Catalyst Deactivation during the Conversion of Renewables at the Single Particle Level: Etherification of Biomass-Based Polyols with Alkenes over H-Beta Zeolites by Parvulescu, Andrei N, Mores, Davide, Stavitski, Eli, Teodorescu, Cristian M, Bruijnincx, Pieter C. A, Gebbink, Robertus J. M. Klein, Weckhuysen, Bert M

“…The etherification of biomass-based alcohols with various linear α-olefins under solvent-free conditions was followed in a space- and time-resolved manner on 9…”
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Structure, reactivity, electronic configuration and magnetism of samarium atomic layers deposited on Si(001) by molecular beam epitaxy by Gheorghe, Nicoleta G., Lungu, George A., Husanu, Marius A., Costescu, Ruxandra M., Macovei, Dan, Teodorescu, Cristian M.

“…► Sm deposited on Si(001) at temperatures below 400°C is ferromagnetic. ► Sm/Si(001) forms a mixture of Sm metal, Sm4Si3 and SmSi2. The first two phases are…”
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Band bending at copper and gold interfaces with ferroelectric Pb(Zr,Ti)O3 investigated by photoelectron spectroscopy by Apostol, Nicoleta G., Ştoflea, Laura E., Tănase, Liviu C., Bucur, Ioana Cristina, Chirilă, Cristina, Negrea, Raluca F., Teodorescu, Cristian M.

“…•Synthesis of lead zirco-titanate (001) layers with nearly perfect stoichiometric transfer from substrates by pulsed laser deposition.•Copper forms continuous…”
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