| A new interpretation of dielectric data in molecular glass formers (2005) | |||||||||
Abstract | |||||||||
| 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.. Comment: 7 pages, 4 figures, 68 references; 3. version extended following referee advice | |||||||||
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