Heat Capacity of Magnesium–Neodymium Hexaaluminate NdMgAl11O19

IF 0.8 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2025-04-05 DOI:10.1134/S0036024424703163

P. G. Gagarin, A. V. Guskov, V. N. Guskov, M. A. Ryumin, G. E. Nikiforova, K. S. Gavrichev

引用次数: 0

Abstract

The heat capacity of magnesium–neodymium hexaaluminate NdMgAl₁₁O₁₉ with a magnetoplumbite structure was measured by relaxation, adiabatic, and differential scanning calorimetry in the temperature range 2–1850 K. The data were smoothed after matching the temperature dependences of heat capacity obtained by different methods. The thermodynamic functions (entropy and change of enthalpy) were calculated, and the anomalous Schottky heat capacity in the low temperature region was estimated.

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镁-六铝酸钕NdMgAl11O19的热容

采用松弛法、绝热法和差示扫描量热法测定了具有磁铅石结构的六铝酸镁钕NdMgAl11O19在2 ~ 1850 K范围内的热容。在匹配不同方法得到的热容的温度依赖关系后，对数据进行平滑处理。计算了热力学函数（熵和焓变），估计了低温区的异常肖特基热容。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.