Heat Capacity and Thermal Expansion of Yttrium Tantalate.

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    • Abstract:
      The isobaric heat capacities of two monoclinic (M' and M) modifications of yttrium orthotantalate at temperatures 5–1300 K have been measured by the adiabatic and differential scanning calorimetry methods. It has been demonstrated that the difference in structure between the crystal lattices of M' and M has little effect in the heat capacity, and the difference between the heat capacities of these phases Cp(M) – Cp(M') is small, always positive, and increases in the range of the lowest temperatures. The unit cell parameters of M-YTaO4 have been determined as a function of temperature in the range 300–1173 K. [ABSTRACT FROM AUTHOR]
    • Abstract:
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