Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Flor, Giorgio"'
In this paper we investigated the most important family of proton conducting oxides, i.e. cerates, by means of pair distribution function analysis (PDF) obtained from total neutron scattering data. The results clearly demonstrates that the local stru
Externí odkaz:
http://arxiv.org/abs/0808.1162
In this paper the effect of the chemical pressure induced by the Sr replacement for Ca in the La1.4Sr1.6Mn2O7 lattice is directly probed by means of neutron diffraction as a function of temperature. The results show a progressive change of the magnet
Externí odkaz:
http://arxiv.org/abs/0710.4502
Autor:
Tealdi, Cristina, Malavasi, Lorenzo, Gozzo, Fabia, Ritter, Clemens, Mozzati, Maria Cristina, Chiodelli, Gaetano, Flor, Giorgio
This study presents correlations between the structural and transport properties of pure and doped neodymium cobaltate, a compound of great interest for its foreseen applications as catalyst, sensor and thermoelectric material. Neutron and x-ray powd
Externí odkaz:
http://arxiv.org/abs/0706.3760
Nature of the Monoclinic to Cubic Phase Transition in the Fast Oxygen Ion Conductor La2Mo2O9 (LAMOX)
Autor:
Malavasi, Lorenzo, Kim, HyunJeong, Billinge, Simon J. L., Proffen, Thomas, Tealdi, Cristina, Flor, Giorgio
La2Mo2O9 (LAMOX) is a fast oxygen ion conductor which shows high oxygen ion conductivities comparable to those of yttria-sabilized zirconia (YSZ) . LAMOX is subject to a structural phase transition from the non-conductive monoclinic form to the highl
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702628
Autor:
Malavasi, Lorenzo, Quartarone, Eliana, Sanna, Carla, Lampis, Nathascia, Lehmann, Alessandra Geddo, Tealdi, Cristina, Mozzati, Maria Cristina, Flor, Giorgio
In this paper we report the deposition of epitaxial thin films of Nd1-xSrxCoO3 with x=0, 0.2 and 0.5 on single crystalline substrates (SrTiO3 and LaAlO3) carried out by means of rf-magnetron sputtering. The deposited films are all completely oriented
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607584
Autor:
Malavasi, Lorenzo, Mozzati, Maria Cristina, Pomjakushin, Vladimir, Tealdi, Cristina, Azzoni, Carlo Bruno, Flor, Giorgio
In this work we studied, by means of high-resolution neutron diffraction as a function of temperature, the La1.4Sr0.8Ca0.8Mn2O7 bilayered manganite for two different annealing treatments. Out data allowed us to shown, for the first time, the absence
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605060
Autor:
Malavasi, Lorenzo, Mozzati, Maria Cristina, Tealdi, Cristina, Azzoni, Carlo B., Flor, Giorgio
The results of the synthesis and characterization of the optimally doped (La)1.4(Sr1-yCay)1.6Mn2O7 solid solution with y=0, 0.25 and 0.5 are reported. By progressively replacing the Sr with the smaller Ca, while keeping fixed the hole-concentration d
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603702
Autor:
Malavasi, Lorenzo, Sanna, Carla, Lampis, Nathascia, Lehmann, Alessandra Geddo, Tealdi, Cristina, Mozzati, Maria Cristina, Flor, Giorgio
In this paper we reported, to the best of our knowledge, the first deposition of highly oriented thin films (with thickness of about 90 nm) of NdCoO3 and Nd0.8Sr0.2CoO3 cobaltites on single-crystalline STO and LAO substrates. Our investigation has sh
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508714
Autor:
Malavasi, Lorenzo, Bertasa, Anna Maria, Mozzati, Maria Cristina, Tealdi, Cristina, Azzoni, Carlo Bruno, Flor, Giorgio
In this paper we report the results of the synthesis and structural, transport and magnetic characterization of pure La0.5Sr1.5MnO4 (LSMO) and 5% doped samples, i.e. La0.5Sr1.5Mn0.95B0.05O4, where B = Ru, Co and Ni. It is shown that even a light dopi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508464
Autor:
Malavasi, Lorenzo, Mozzati, Maria Cristina, Ritter, Clemens, Azzoni, Carlo Bruno, Flor, Giorgio
In this Communication is it shown the role of Ca-doping in stabilizing the A-type AFM structure of the optimally doped La1.4Sr1.6Mn2O7 bilayered manganite.
Comment: 10 pages, 4 figures
Comment: 10 pages, 4 figures
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507393