Effects of hydrogen bonding on supercooled liquid dynamics and the implications for supercooled water

Physical Review B - Condensed Matter and Materials Physics

Volumn 79, Issue 17, 2009, Pages

  Mattsson, J ^a   Bergman, R ^a   Jacobsson, P ^a   Borjesson L ^a  

^a CHALMERS UNIVERSITY OF TECHNOLOGY   (Sweden)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 67049158417     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.174205     Document Type: Article

References (40)

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14. As discussed in the text, the data at low temperatures can be well described by a VFT expression and thus a straight line in the linearized representation of Fig. 2. To estimate a characteristic temperature, T, for the crossover we approximate the high-temperature regime with a straight line and determine the crossover temperature as the intersection of the two lines. We estimate that we can generally determine T within ±2-3 K, as shown from the error bars in Fig. 2 (Tg is determined within ±1 K). We emphasize that we do not assign any physical significance to this choice of fitting function for the high-temperature regime but only use it as a straightforward means to consistently extract the crossover temperature. For the glycol tetramer, we have data only near Tg. However, since the crossover temperature is T =282±3 K for the longer chain glycols, T =282 K is used.
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