钛酸镥Lu2Ti2O7的热容量和热力学函数

IF 0.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI:10.1134/S0036024424703448

P. G. Gagarin, A. V. Guskov, V. N. Guskov, A. V. Khoroshilov, K. S. Gavrichev

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引用次数: 0

摘要

测定了钛酸镥在2 ~ 1869 K温度范围内的热容，并计算了热容、熵、焓变和还原吉布斯能的光滑温度依赖性。证实了Lu2Ti2O7在低温范围内的热容存在温和异常，并确定了其参数。根据吉布斯能的计算值，估计了Lu2Ti2O7在研究温度范围内的热力学稳定性。

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Heat Capacity and Thermodynamic Functions of Lutetium Titanate Lu2Ti2O7

The heat capacity of lutetium titanate was measured in the temperature range 2–1869 K, and the smoothed temperature dependences of heat capacity, entropy, enthalpy changes, and reduced Gibbs energy were calculated. The presence of a gentle anomaly in the heat capacity of Lu₂Ti₂O₇ in the low-temperature range was confirmed, and its parameters were determined. Based on the calculated values of the Gibbs energy the thermodynamic stability of Lu₂Ti₂O₇ in the studied temperature range was estimated.

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.