4.5 Article

Heat capacity of lithium tungsten oxide doped by molybdenum (Li2W0.9Mo0.1O4) in the temperature range 319-910 K by DSC

Journal

PHYSICA B-CONDENSED MATTER
Volume 612, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.physb.2021.412880

Keywords

Scintillator materials; Lithium tungsten oxide; Molybdenum; Heat capacity; Enthalpy; Entropy

Funding

  1. Russian Science Foundation [1919-00095]

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The heat capacity of Li2W0.9Mo0.1O4 single crystals in the temperature range of 319-910 K was studied using differential scanning calorimetry for the first time. The temperature dependence was well described by a polynomial equation, and based on the smoothed heat capacity values, the enthalpy and entropy increments were calculated. No phase transitions were observed throughout the temperature range.
For the first time the heat capacity of Li2W0.9Mo0.1O4 single crystals in the temperature range 319-910 K was studied and measured by differential scanning calorimetry. The temperature dependence of the heat capacity has been well described by a polynomial Cop,m (T) = 41.253 + 0.41785.T - 4.6786.10- 4.T2 + 1.9945.10-7.T3. On the basis of smoothed heat capacity the enthalpy and entropy increments have been calculated in the temperature range 319-910 K. No phase transitions were observed throughout the temperature range.

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