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Second-order phase transition in PbO and SnO at high pressure: Implications for the litharge-massicot phase transformation

✍ Scribed by Adams, David M.; Christy, Andrew G.; Haines, Julian; Clark, Simon M.


Book ID
126780022
Publisher
The American Physical Society
Year
1992
Tongue
English
Weight
543 KB
Volume
46
Category
Article
ISSN
1098-0121

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The enthalpy of calcite has been measured directly between 973 K and 1325 K by transposed-temperaturedrop calorimetry. The excess enthalpy has been analysed in terms of Landau theory for this tricritical phase transition. The zero-point enthalpy and entropy allow estimates of the parameters a and C