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.

中文翻译：

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钽酸钇的热容和热膨胀

已通过绝热和差示扫描量热法测量了原钽酸钇的两个单斜晶系（M' 和 M）变体在 5-1300 K 温度下的等压热容。已经证明，M'和M晶格之间的结构差异对热容的影响很小，并且这些相的热容Cp(M)-Cp(M')之间的差异很小，总是正，并在最低温度范围内增加。M-YTaO4 的晶胞参数已确定为 300-1173 K 范围内温度的函数。