Anharmonic effects in the thermodynamic properties of solids I. An adiabatic calorimeter for the temperature range 25-500 °C: the heat capacities of Al2O3, Al and Pb
作者： A J Leadbetter
DOI: 10.1088/0022-3719/1/6/304
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摘要: The importance of accurate high-temperature thermodynamic data for the study anharmonic effects in solids is discussed, and an adiabatic calorimeter measurement heat capacities temperature range 25-500 °C described. precision capacity about ±01% T 400 °C. Measurement a Calorimetry Conference sample Al2O3 shows that accuracy calorimetry probably better than ±02% throughout whole studied. Results have been obtained lead to near melting point aluminium 500 For contribution Cp observed > 250 which attributed vacancy formation; value 052 ±026 ev derived enthalpy formation vacancy.
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