Search Results - "Vitucci, F. M"
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Optical conductivity of bismuth-based topological insulators
Published in Physical review. B, Condensed matter and materials physics (24-07-2012)“…The optical conductivity [sigma] sub(1) ( omega ) and the spectral weight SW of four topological insulators with increasing chemical compensation (Bi sub(2) Se…”
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Relaxation Dynamics and Phase Transitions in Ionic Liquids: Viscoelastic Properties from the Liquid to the Solid State
Published in The journal of physical chemistry. B (08-10-2015)“…In the present work we performed low-frequency mechanical spectroscopy experiments to measure the mechanical modulus of two ionic liquids and its variation…”
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Stabilization of Different Conformers of Bis(trifluoromethanesulfonyl)imide Anion in Ammonium-Based Ionic Liquids at Low Temperatures
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (25-09-2014)“…The infrared absorption spectra of two ionic liquids with bis(trifluoromethanesulfonyl)imide (TFSI) as an anion and ammonium with different alkyl chains as…”
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Low-Temperature Phase Transitions of 1‑Butyl-1-methylpyrrolidinium Bis(trifluoromethanesulfonyl)imide Swelling a Polyvinylidenefluoride Electrospun Membrane
Published in Journal of physical chemistry. C (20-03-2014)“…We studied the temperature behavior of 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYR14TFSI) swelling a polyvinylidenefluoride (PVdF)…”
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Optical spectra of LaMn0.5Ga0.5O3: A contribution to the assignment of the electronic transitions in manganites
Published in Physica. B, Condensed matter (2014)“…We have prepared a LaMn0.5Ga0.5O3 thin film deposited by Pulsed Laser Deposition on a LSAT substrate and we have measured its transmittance in the visible and…”
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Infrared spectra of bis(trifluoromethanesulfonyl)imide based ionic liquids: Experiments and DFT simulations
Published in Vibrational spectroscopy (01-09-2014)“…We measured the far- and mid-infrared spectra of three ionic liquids having bis(trifluoromethanesulfonyl)imide anions and three different cations of the…”
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Study of the hydrogenation/dehydrogenation process in the Mg–Ni–C–Al system
Published in Journal of alloys and compounds (05-10-2015)“…•A Mg–Ni–C–Al mixture synthesized for application as pellets in a tank is studied.•It is the combination of a hydrogen storing composite with a binding…”
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Interaction of 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide with an electrospun PVdF membrane: Temperature dependence of the concentration of the anion conformers
Published in The Journal of chemical physics (07-09-2015)“…We measured the temperature dependence of the infrared absorption spectrum of 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PY R14-TFSI)…”
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Dynamics of Mn3+ in off-stoichiometric LiMn1.5Ni0.5O4
Published in Journal of alloys and compounds (15-08-2014)“…•In LiMn1.5Ni0.5O4 containing Mn3+ ions a thermally activated peak is observed.•The process is attributed to a polaronic conduction.•For the first time the…”
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Investigation of the Chemical Disorder of LiNi0.5Mn1.5O4 Lattice by Means of Extended X‑ray Absorption Fine Structure Spectroscopy
Published in Journal of physical chemistry. C (20-11-2014)“…This work reports on a characterization methodology for investigating the transition-metal site disorder in the LiNi0.5Mn1.5O4 spinel structure (LNMO, Fd3̅m…”
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Optical investigation of LaMnO3 thin films: a study of the 2-eV band
Published in The European physical journal. B, Condensed matter physics (01-02-2011)“… We measure the transmittance of LaMnO 3 (LMO) thin films in the spectral range from 10 000 to 38 000 cm -1 as a function of temperature. The optical…”
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Pressure-temperature phase diagram of charge ordering in Nd1/2Sr1/2MnO3
Published in Europhysics letters (01-11-2010)“…We observe how the charge-ordering (CO) temperature TCO of Nd1/2Sr1/2MnO3 decreases with the external pressure p from 160 K at p=0 down to 30 K at p≃ 4.5 GPa,…”
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Low Frequency Mechanical Spectroscopy Study of Three Pyrrolidinium Based Ionic Liquids
Published in Archives of metallurgy and materials (01-04-2015)“…In this work we present our recent results on three ionic liquids (ILs), which share bis(trifluoromethanesulfonyl)imide (TFSI) as anion and have different…”
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Analysis of the self-discharge process in LiCoPO4 electrodes: bulks
Published in Electrochimica acta (10-10-2015)“…[Display omitted] •Electrochemically de-lithiated LiCoPO4 electrodes spontaneously self-discharge in open circuit conditions.•Ex-situ synchrotron XRD and FTIR…”
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H sub(2) thermal desorption and hydride conversion reactions in Li cells of TiH sub(2)/C amorphous nanocomposites
Published in Journal of alloys and compounds (05-10-2015)“…Here we investigate the properties of amorphous TiH sub(2)/carbon nanocomposites as possible active material in lithium cells. Several TiH sub(2)/C mixtures…”
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A study of the conformers of the N,N-diethyl-N-methyl-N-propylammonium ion by means of infrared spectroscopy and DFT calculations
Published in Vibrational spectroscopy (01-09-2015)“…The infrared absorption spectrum of the N,N-diethyl-N-methyl-N-propylammonium (DMPA) bis(fluorosulfonyl)imide (FSI) ionic liquid is measured as a function of…”
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Dynamics of Mn super(3+) in off-stoichiometric LiMn sub(1.5)Ni sub(0.5)O sub(4)
Published in Journal of alloys and compounds (15-08-2014)“…LiMn sub(1.5)Ni sub(0.5)O sub( 4) is investigated by anelastic spectroscopy in order to study the manganese dynamics. An intense thermally activated peak,…”
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H2 thermal desorption and hydride conversion reactions in Li cells of TiH2/C amorphous nanocomposites
Published in Journal of alloys and compounds (2015)“…•Galvanostatic measurements on amorphous TiH2 is reported.•Variation of ball milling pre-treatment vary the first discharge capacity.•Relation between thermal…”
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Pressure-temperature phase diagram of charge ordering in Nd1/2Sr1/2MnO3
Published 02-11-2010“…EPL 92, 47001 (2010) We observe how the charge-ordering (CO) temperature of Nd1/2Sr1/2MnO3 decreases with the external pressure p from 160 K at p = 0 down to…”
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