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The Crystal Structure of the Cesium Molybdenum Bronze CS0.14MoO3
No full textJournal of Solid State Chemistry
Volume 104, Issue 2, June 1993, Pages 209-214
The Crystal Structure of the Cesium Molybdenum Bronze CS0.14MoO3 (Article)
Depero, L.E.,
Zocchi, M.,
Zocchi, F.,
Demartin, F.
Dipartimento di Ingegneria Meccanica dell'Università, Via Branze, 25123 Brescia, Italy; IMAI-CNR Area della Ricerca di Roma, 00016 Monterotondo Stazione, Rome, Italy and Istituto di Chimica Strutturistica Inorganica dell'Università degli Studi, Via G. Venezian 21, 20133, Milan, Italy
Abstract
The crystal of the title compound is hexagonal, space group P 63/m, with a = 10.620(9), c = 3.722(2) Å, and Z = 6. Couples of MoO6 distorted octahedra, linked by edges, constitute, by repetitive edge sharing along the c axis, ribbons kept together in bundles by lateral corner sharing. These bundles, by being packed together, generate tunnels where delocalized Cs atoms are inserted. The results confirmed the previously found correlation between the Mo oxidation state and the distortion of the coordination "octahedra" and allow one to extend the correlation to the possible conduction properties of the title compound and to those of structurally related oxides and bronzes. © 1993 Academic Press. All rights reserved.
Reaxys Database Information
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ISSN: 00224596 CODEN: JSSCBSource Type: Journal Original language: English
DOI: 10.1006/jssc.1993.1155Document Type: Article
Depero, L.E.; Dipartimento di Ingegneria Meccanica dell'Università, Via Branze, 25123 Brescia, Italy; IMAI-CNR Area della Ricerca di Roma, 00016 Monterotondo Stazione, Rome, Italy and Istituto di Chimica Strutturistica Inorganica dell'Università degli Studi, Via G. Venezian 21, 20133, Milan, Italy,
© Copyright 2008 Elsevier B.V., All rights reserved
Chemical Physics Letters Volume 214, Issue 2, 29 October 1993, Pages 208-214 A study of the electronic structure of decagonal Al70Ni15CO15 quasi-crystal
No full textThe electronic structure of Al70Ni15Co15 decagonal quasi-crystal has been studied by X-ray photoelectron spectroscopy (XPS). The disappearance of the Ni2p(3d9) satellite and the decreased intensity of the 3F state in the NiL3M45M45 Auger spectra indicate a strong d-sp hybridization accompanied by the filling of the Ni3d bands. The filling of the Ni3d bands produces closed-shell type XPS spectra of the Ni core lines, while Co core line XPS spectra show that a significant amount of d holes are still localized on Co. This picture suggests that the magnetic properties are mainly determined by Co. The dispersion of the 3d holes is also responsible for the drop of the 3d states near EF but the angle integrated density of states does not exhibit a pseudo-gap. Finally, the correlation energy, UA, has been calculated from the kinetic energy of the 1G term of the NiL3M45M45 Auger emission
Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. II: XPS electronic structures
No full textThe description of the crystallographic structure of Cu complexes of intercalated compounds of α-Zr(HPO4)2·H2O (α-ZrP) reported in part I of this work is implemented with an X-ray photoelectron spectroscopy study performed on the same samples. The experiments carried out at room and liquid nitrogen temperatures, show, in contrast with data previously reported, that Cu2+ ions are reduced by the Al-Kα and Mg-Kα radiations. Nevertheless, some information on the electronic structure has been achieved for those elements that are not photoreduced. In particular, the N1s core line due to the interaction of nitrogen in the phenanthroline with hydrogen in the structure has been identified, and the suppression of this interaction with the increasing concentration of copper has been demonstrated
On the non-local screening mechanisms in the 2p photoelectron spectra of NiO and La2NiO4
No full textErbium incorporation in LiNbO3 crystals obtained by ion-exchange process
No full textErbium local doping of LiNbO3 single crystal by the ion-exchange has been performed. The role of the process parameters such as exchange time and temperature, crystal cut direction, composition and heating rate of the Er ions liquid source has been investigated by means of secondary ion mass spectrometry, X-ray diffraction and micro-lumi- nescence techniques. A theoretical model has been presented for describing the ion-exchange process and has been successfully applied to fit the experimental data. We have demonstrated that the method is suitable for Er-doping of LiNbO3 crystals, with the possibility of tailoring the optical performances of the material through the preparation parameters
A STUDY OF THE ELECTRONIC-STRUCTURE OF DECAGONAL AL70NI15CO15 QUASI-CRYSTAL
No full textThe electronic structure of A170Ni15Co15 decagonal quasi-crystal has been studied by X-ray photoelectron spectroscopy (XPS). The disappearance of the Ni2p(3d9) satellite and the decreased intensity of the 3F state in the Ni-L3M45M45 Auger spectra indicate a strong d-sp hybridization accompanied by the filling of the Ni3d bands. The filling of the Ni3d bands produces closed-shell type XPS spectra of the Ni core lines, while Co core line XPS spectra show that a significant amount of d holes are still localized on Co. This picture suggests that the magnetic properties are mainly determined by Co. The dispersion of the 3d holes is also responsible for the drop of the 3d states near E(F) but the angle integrated density of states does not exhibit a pseudo-gap. Finally, the correlation energy, U(A), has been calculated from the kinetic energy of the 1G term of the Ni-L3M45M45 Auger emission
Futurist Cabaret: Let us Reform the Stage (2015)
No full text1. Poster. 2. Program. 3. Press Release. 4 - 15. Images. 16. Set Sketch Up.Archival file of an adapted works of futurist playwrights F.T Marinetti, A. Rognoni, M. Dessy, B. Corra, E. Settimelli, P. Buzzi, F. Depero, F. Monarchi, E. Prampolini, and M. Somenzi. "Futurist Cabaret" directed by Gabrielle Houle played from March 31, 2014 to April 1 of the same year
The fine structure of the Cu2p 3 2 X-ray photoelectron spectra of copper oxide based compounds
No full textThis paper shows that in copper oxide based compounds where Cu ions are in a square planar geometry with four coordination oxygen ions, i.e. CuO and Nd2CuO4, the Cu2p3 2 (3d)10L) X-ray photoelectron core lines are narrower than in similar compounds with Cu ions in a pyramidal or octahedral geometry with five or six neighboring oxygens, i.e. Bi2Sr2CaCu2O8 and La2CuO4. To explain this difference two different charge transfer mechanisms from the oxygen p orbitals to the Cu3d orbitals are proposed. For square planar geometry (CuO4) only the px,y → dx2 - y2 charge transfer is allowed, whereas for octahedral or pyramidal geometry the additional pz → dz2 transition could take place. These two different final state configurations will produce different ionization potentials for the Cu2p3 2 core levels
Investigation of magnetic and magnetotransport properties of Co-based multilayered granular films
No full textThe influence of magnetic clusters dimensions and the type of spacer on the magnetic and magnetotransport properties of Co-Au and Co-Cu granular films was studied. The granular films were deposited by a three-target RF sputtering in argon atmosphere. A magnetic field was applied parallel to the film surface, where no preferential magnetization direction was found. A decrease of the in-plane magnetization component and an increase of the perpendicular anisotropy with increasing Co thickness was observed in the Co-Au films
Sobre el Art Director. Paradigmas creativos: W. Addison, P. Rand y F. Depero
No full textEl present projecte descriu els inicis de la comunicació visual i la importància d’aquesta
per els comerços que van néixer a rel de la Revolució Industrial. Analitza el moviment
modern i l’aparició de la figura del Art Director als Estats Units en una època liderada per l’Avantguardisme i el Futurisme. S’endinsa en els treballs de tres figures importants en el món del disseny gràfic: William Addison, Paul Rand i Fortunato Depero. L’objectiu d’aquest treball es mostrar la influencia d’aquestes figures en la publicitat
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