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Doping effects on the phase transition of LiMn(2)O(4)by anelastic spectroscopy and differential scanning calorimetry (Articolo in rivista)
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- 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)
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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
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- Paolone, A; Cantelli, R; Scrosati, B; Reale, P; Ferretti, M; Masquelier, C (literal)
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- 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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