Doping effects on the phase transition of LiMn(2)O(4)by anelastic spectroscopy and differential scanning calorimetry (Articolo in rivista)

Type
Label
  • Doping effects on the phase transition of LiMn(2)O(4)by anelastic spectroscopy and differential scanning calorimetry (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Paolone, A; Cantelli, R; Scrosati, B; Reale, P; Ferretti, M; Masquelier, C (2006)
    Doping effects on the phase transition of LiMn(2)O(4)by anelastic spectroscopy and differential scanning calorimetry
    in Materials science & engineering. A, Structural materials: properties, microstructure and processing
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Paolone, A; Cantelli, R; Scrosati, B; Reale, P; Ferretti, M; Masquelier, C (literal)
Pagina inizio
  • 220 (literal)
Pagina fine
  • 223 (literal)
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  • 442 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; INFM, CNR, Lab Reg SUPERMAT, Salerno, Italy; Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy; Univ Genoa, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy; INFM, CNR, Lab Reg LAMIA, I-16152 Genoa, Italy; Univ Picardie, Lab Reactiv & Chim Solides, F-80039 Amiens, France (literal)
Titolo
  • Doping effects on the phase transition of LiMn(2)O(4)by anelastic spectroscopy and differential scanning calorimetry (literal)
Abstract
  • A comparative study of Li1-xMn2-xO4 (0 <= x <= 0.08) by means of anelastic spectroscopy and differential scanning calorimetry (DSC) is reported. DSC measurements, in agreement with previous literature, can detect a phase transition accompanied by latent heat only for x < 0.04. This fact has been generally accepted as a proof that the transformation is suppressed by doping. In this paper we show that DSC alone is not sufficient to provide a correct answer to the problem. Indeed, anelastic spectroscopy, which is a technique extremely sensitive to rearrangements of atoms in the lattice, indicates that the transition survives up to x = 0.08, is shifted towards lower temperatures, and becomes of an order higher than the first, so that there is no associated latent heat. (c) 2006 Elsevier B.V. All rights reserved. (literal)
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