Endothermic freezing on heating and exothermic melting on cooling (Articolo in rivista)

Type
Label
  • Endothermic freezing on heating and exothermic melting on cooling (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.2000228 (literal)
Alternative label
  • Tombari E; Ferrari C; Salvetti G; Johari GP (2005)
    Endothermic freezing on heating and exothermic melting on cooling
    in The Journal of chemical physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Tombari E; Ferrari C; Salvetti G; Johari GP (literal)
Pagina inizio
  • 051104 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • CAPACITY; GLASS (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 123 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-IPCF, Ist Proc Chim Fis, I-56124 Pisa, Italy (literal)
Titolo
  • Endothermic freezing on heating and exothermic melting on cooling (literal)
Abstract
  • Generally, a liquid freezes exothermally on cooling and a crystal melts endothermally on heating. Here we report an opposite occurrence-a liquid's endothermic freezing on heating and the resulting crystal's exothermic melting on cooling at ambient pressures. C-p decreases on freezing and increases on melting, and the equilibrium temperature meets the thermodynamic requirement. Melting on cooling takes longer than freezing on heating. A rapidly cooled crystal state becomes kinetically frozen, evocative of a nonergodic state. Both C-p and enthalpy relax like those of glasses, though the viscosity is only a few centipoise. The crystal state belongs to energy minima higher than those of the melt, which has consequences for the use of potential-energy landscape, or inherent structures, for a thermodynamic description of a material. (literal)
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