Thermodynamics Research Center / ThermoML | Thermochimica Acta

Magnetic effect on the phase transitions of n-docosane by means of a high resolution and super-sensitive DSC

Wang, S.[Shaolan], Tozaki, K.-I.[Ken-Ichi], Hayashi, H.[Hideko], Inaba, H.[Hideaki]
Thermochim. Acta 2013, 571, 8-14
ABSTRACT
The magnetic effect on the phase transitions of n-C22H46(docosane) was measured using a high resolution and super-sensitive DSC. The surface freezing phenomenon was observed at about 3 K above the bulk melting temperature in addition to solid solid transitions and melting transition. The transition temperatures due to the solid solid transitions and melting were shifted to higher temperatures by about 10 mK by applying magnetic field of 5T. On the other hand, the transition temperature due to surface freezing phenomenon was shifted to lower temperature by about 10 mK by applying magnetic field of 5T. The magnetic effects were discussed based on the extension of the Clapeyron equation.
Compounds
# Formula Name
1 C22H46 docosane
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Triple point temperature, K ; Crystal 2
  • Crystal 2
  • Crystal 1
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • Triple point temperature, K ; Crystal 1
  • Crystal 1
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2
  • Crystal 2
  • Crystal 1
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 1
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal 1
  • Crystal 1
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1