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dc.contributor.authorVIJ, JAGDISH KUMAR
dc.date.accessioned2010-03-12T15:24:02Z
dc.date.available2010-03-12T15:24:02Z
dc.date.issued2003
dc.date.submitted2003en
dc.identifier.citationG. Power, G. P. Johari and J. K. Vij, Relaxation strength of localized motions in D. Sorbitol and mimicry of glass-softening thermodynamics, The Journal of Chemical Physics, 119, 2003, 435 - 442en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/38828
dc.descriptionPUBLISHEDen
dc.description.abstractThe dielectric relaxation strength, ??JG, the relaxation rate, fm,JG and the distribution parameter, ?JG, of the faster relaxation process in D-sorbitol have been studied as a function of temperature and the cooling rate. Amongst these, fm,JG and ?JG of the glass and the supercooled liquid change smoothly with the temperature, T, but ??JG of the glassy state increases slowly on heating until the glass-softening range is reached and thereafter it increases rapidly at T above the glass-softening temperature, Tg. Thus its plot against T has an elbow-shape, remarkably similar to that observed for the volume, enthalpy and entropy. The derivative (d??JG/dT) increases relatively abruptly at Tg like the thermal expansion coefficient and the heat capacity of a glass. Thus ??JG is a function of the state?s entropy and volume. The distribution of relaxation times became narrower as T was increased, and fm,JG increased according to the Arrhenius equation, fm,JG = 2.992?1014?exp[?5.312?104/RT], where R = 8.314?J?(K?mol)?1. It is deduced that fm,JG increases on structural relaxation of D-sorbitol. The results indicate that the relaxation mechanism involves motions of segments of the D-sorbitol molecules or of the whole molecule in local regions.en
dc.format.extent435en
dc.format.extent442en
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.relation.ispartofseriesThe Journal of Chemical Physics;
dc.relation.ispartofseries119;
dc.rightsYen
dc.subjectElectronic & Electrical Engineering
dc.titleRelaxation strength of localized motions in D. Sorbitol and mimicry of glass-softening thermodynamicsen
dc.typeJournal Articleen
dc.contributor.sponsorEnterprise Irelanden
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jvij
dc.identifier.rssinternalid24898
dc.identifier.rssurihttp://dx.doi.org/10.1063/1.1577321en


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