Exploració per autor "Macovez, Roberto"Més informacióMés informació

Ara es mostren els items 44-48 de 48

    • Ultraslow dynamics of water in organic molecular solids 

      Macovez, Roberto; Mitsari, Efstratia; Zachariah, Manesh; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Tamarit Mur, José Luis (2014-03-06)
      Article
      Accés restringit per política de l'editorial
      The relaxation dynamics of water in hygroscopic molecular solids is probed by broadband dielectric spectroscopy in the temperature range from 200 to 450 K. Evidence is found for three types of dynamic processes. The ...

    • Uniaxial negative thermal expansion in polymorphic 2-bromobenzophenone, due to aromatic interactions? 

      Romanini, Michela; Rietveld, Ivo B.; Barrio Casado, María del; Negrier, Philippe; Mondieig, Denise; Macovez, Roberto; Céolin, René; Tamarit Mur, José Luis (American Chemical Society, 2021-04-07)
      Article
      Accés obert
      The structure of the metastable form II of 2-bromobenzophenone, obtained by crystallization from the melt, has been determined by powder X-ray diffraction. Form II has been solved in the centrosymmetric monoclinic space ...

    • Variable-range electron hopping, conductivity cross-over and space-charge relaxation in C60Br6 

      Manesh, Zachariah; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Tamarit Mur, José Luis; Barrio Casado, María del; Macovez, Roberto (2016-07-01)
      Article
      Accés obert
      Dielectric spectroscopy is employed to probe the frequency-dependent conductivity and dipolar dielectric response of solid C60Br6. Below approximately 215 K, charge conduction is electronic and well described by Mott's ...

    • Water-triggered conduction and polarization effects in a hygroscopic fullerene salt 

      Zachariah, Manesh; Tripathi, Pragya; Mitsari, Efstratia; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Barrio Casado, María del; Tamarit Mur, José Luis; Macovez, Roberto (2014)
      Comunicació de congrés
      Accés obert
      Impedance spectroscopy is employed to probe the frequency-dependent conductivity and dielectric response of the crystalline C60O24Na24 fulleride, both in its pure form obtained by heating to 473 K and in its bulk-hydrate ...

    • Water-Triggered Conduction Mediated by Proton Exchange in a Hygroscopic Fulleride and Its Hydrate 

      Zachariah, Manesh; Mitsari, Efstratia; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Barrio Casado, María del; Tamarit Mur, José Luis; Macovez, Roberto (2015-01-08)
      Article
      Accés obert
      Impedance spectroscopy is employed to probe the impact of water on the dc conductivity and ac dielectric response of the polycrystalline C-60(ONa)(24) fulleride, both in its bulk-hydrate form, stable only below 370 K, and ...