A new interpretation of dielectric data in molecular glass formers

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Literature dielectric data of glycerol, propylene carbonate and ortho-terphenyl (OTP) show that the measured dielectric relaxation is a decade faster than the Debye expectation, but still a decade slower than the breakdown of the shear modulus. From a comparison of time scales, the dielectric relaxation seems to be due to a process which relaxes not only the molecular orientation, but the entropy, the short-range order and the density as well. On the basis of this finding, we propose an alternative to the Gemant-DiMarzio-Bishop extension of the Debye picture.
7 pages, 4 figures, 68 references; 3. version extended following referee advice

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Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/103251

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0511396
 http://arxiv.org/abs/cond-mat/0511396
 J. Chem. Phys 124, 094505 (2006)
 doi:10.1063/1.2176618

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arXiv