Matches in SemOpenAlex for { <https://semopenalex.org/work/W2013605265> ?p ?o ?g. }
- W2013605265 abstract "The specific heat ${C}_{p}$ of a liquid is partly vibrational, arising from change in phonons and anharmonic forces with temperature $T$, and partly configurational, arising from change in the structure with $T$. The first determines a liquid's elastic resistance to stress or rigidity and the second its fluid behavior. Both are thought to decrease on liquid's vitrification, and their ad hoc estimates are currently used for understanding a supercooled liquid's dynamics. We report measurements of the vibrational part, ${C}_{p,mathrm{vib}}$, and determine the configurational part. It is found that there is almost no decrease in ${C}_{p,mathrm{vib}}$ on structural freezing of the polymer melts, and the decrease in ${C}_{p}$ is configurational. An interpretation of the finding is that the curvature of the fixed configurational energy minimum in which a polymer glass structure is trapped and the associated anharmonicity have quantitatively the same effect on ${C}_{p}$ as the corresponding two sources when its melt explores a multiplicity of high energy minima and its volume changes." @default.
- W2013605265 created "2016-06-24" @default.
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- W2013605265 date "2008-01-11" @default.
- W2013605265 modified "2023-09-25" @default.
- W2013605265 title "Vibrational and configurational parts of the specific heat at glass formation" @default.
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- W2013605265 doi "https://doi.org/10.1103/physrevb.77.024304" @default.
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