Abstract
The molar heat capacities of La 2Mo 2O 9 and La 1.9Sr 0.1Mo 2O 9-δ were obtained using the differential scanning calorimetry (DSC) technique in a temperature range from 298 to 1473 K. The DSC curve of La 2Mo 2O 9 showed an endothermal peak around 834 K corresponding to a first-order monoclinic-cubic phase transition, and the enthalpy change accompanying this phase transition is 5.99 kJ/mol. No evident endothermal peak existed in the DSC curve of La 1.9Sr 0.1Mo 2O 9-δ, but a broad thermal anomaly existed in its heat capacity curve at around 832 K. In addition, the heat capacity values of La 2Mo 2O 9 and La 1.9Sr 0.1Mo 2O 9-δ began to decrease at 1196 and 1330 K, respectively. The non-transitional heat capacity values of La 2Mo 2O 9 and La 1.9Sr 0.1Mo 2O 9-δ were formulated using multiple regression analysis in two temperature ranges.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of University of Science and Technology Beijing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
