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Heat capacity of LiInTe2

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Abstract

The heat capacity of LiInTe2 at constant pressure was measured with an adiabatic vacuum calorimeter in the temperature rangeT=7–300 K. The standard molar enthalpyH 0m —H 0m (0) and the standard molar entropyS 0 (T) were calculated. From a theoretical analysis, the contribution to the heat capacity due to the lattice anharmonicity was estimated.The increased effect of the lattice anharmonicity in LiInTe2 is caused by specific properties of the Li-Te bond.

Zusammenfassung

Die Wärmekapazität von LiInTe2 bei konstantem Druck wurde mit einem adiabatischen Vakuumkalorimeter im Temperaturbereich 7 ≤T ≤ 300 K bestimmt. Die molare StandardenthalpieH 0m — H 0m (0) und die molare StandardentropieS 0 (T) wurden berechnet. Aus einer theoretischen Analys wurde der Anteil der Gitteranharmonizität an der Wärmekapazität abgeschätzt. Der erhöhte Einfluss der Gitteranharmonitität in LiInTe2 wird durch spezifische Eigenschaften der Li-Te-Bindung verursacht

РЕЗЮМЕ

С помощью адиабатиче ского вакуумного калориметра измерен а в области температу р 7–300 К и при постоянном д авлении теплоемкост ь LiInTe2. Вычислена стандартн ая молярная энтальпияH 0M -H 0M (0) и станд артная молярная энтр опияS 0(T). На основе теоретич еского анализа установлен в клад решеточной анга рмоничности в теплоемкость. Значи тельный вклад решеточной ангармон ичности в LiInTe2 обусловле н специфическими свой ствами связи Li-Те.

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Authors and Affiliations

  1. Department of Chemistry, Karl Marx University, 7010, Leipzig, Germany

    G. Kühn

  2. Institute of Inorganic Chemistry, Academy of Science of the USSR, Siberian Branch, 630090, Novosibirsk 90, USSR

    I. E. Paukov

  3. Department of Physics, Karl MArx University, 7010, Leipzig, Germany

    H. Neumann

Authors
  1. U. C. Boehnke
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  2. G. Kühn
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  3. F. I. Frolova
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  4. I. E. Paukov
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  5. H. Neumann
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Boehnke, U.C., Kühn, G., Frolova, F.I. et al. Heat capacity of LiInTe2 . Journal of Thermal Analysis 33, 205–209 (1988). https://doi.org/10.1007/BF01914601

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  • DOI: https://doi.org/10.1007/BF01914601

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