dc.contributor.author | VIJ, JAGDISH | en |
dc.date.accessioned | 2008-06-24T12:53:32Z | |
dc.date.available | 2008-06-24T12:53:32Z | |
dc.date.issued | 2006 | en |
dc.date.submitted | 2006 | en |
dc.identifier.citation | G. Power, J. K. Vij and G. P. Johari, Orientation polarization from faster motions in the ultraviscous and glassy diethyl phthalate and its entropy, The Journal of Chemical Physics, 124, 4, 2006, 1-9 | en |
dc.identifier.other | Y | en |
dc.description | PUBLISHED | en |
dc.description | Article Number: 044513 | en |
dc.description.abstract | Dielectric spectra of the relaxation in glassy and ultraviscous liquid diethyl phthalate show that its relaxation strength , the distribution of times, and the relaxation rate are more sensitive to temperature T in the ultraviscous liquid than in the glassy state. The against temperature plot has an elbow-shaped break near Tg of ~181 K, which is remarkably similar to that observed in the entropy, enthalpy, and volume against temperature plots, and in the plot of against the liquid's entropy minus its 0 K value. The ratio of to diethyl phthalate's entropy, after subtracting the 0 K value, is 1.08?10?3 mol K/J in the glassy state at 120.4 K, which decreases slowly to 0.81?10?3 mol K/J at 176 K near Tg and thereafter rapidly increases to 1.57?10?3 mol K/J at 190 K. Variation in parallels the variation of the entropy. A change in the activation energy of the process at T>Tg indicates that its rate is also determined by the structure of the ultraviscous liquid. Features of relaxation are consistent with localized motions of molecules and may not involve small-angle motions of all molecules | en |
dc.description.sponsorship | The authors are grateful to INTEL Ireland Ltd. for funding
the scholarship of one of the authors G.P. . Another
author G.P.J. would like to thank Trinity College for their
hospitality during his stay for this study funded by the SFI
overheads. | en |
dc.format.extent | 1-9 | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | en |
dc.relation.ispartofseries | The Journal of Chemical Physics | en |
dc.relation.ispartofseries | 124 | en |
dc.relation.ispartofseries | 4 | en |
dc.rights | Y | en |
dc.subject | Electronic & Electrical Engineering | en |
dc.title | Orientation polarization from faster motions in the ultraviscous and glassy diethyl phthalate and its entropy | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/jvij | en |
dc.identifier.rssinternalid | 34705 | en |
dc.identifier.doi | http://dx.doi.org/10.1063/1.2159473 | en |
dc.identifier.rssuri | http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JCPSA6000124000004044513000001&idtype=cvips&prog=normal | en |
dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
dc.identifier.uri | http://hdl.handle.net/2262/17672 | |