Measurements of High Temperature Heat Content of the II-VI and IV-VI (II: Zn, Cd IV: Sn, Pb VI: Se, Te) Compounds

Katsunori Yamaguchi, Kazuo Kameda, Yoichi Takeda, Kimio Itagaki

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Abstract

High temperature heat contents of the II-VI and IV-VI compounds (II: Zn, Cd IV: Sn, Pb VI: Se, Te) were measured over the temperature range of 7α-β K using a drop calorimeter. The heat of a-ft transformation of SnSe was 1.1 ±0.1 kJ/mol at 788±2 K, and the heat of fusion of CdSe, CdTe, SnSe, PbSe, SnTe and PbTe were 44.8±0.2, 43.5 ±0.3, 35.5 ±0.4, 42.3 ±0.4, 39.5±0.3 and 47.6±0.4 kJ/mol, respectively, at the corresponding melting points of 1521 ±3, 1373±3, 1149±2, 1351 ±2, 1080±3 and 1209±2K. The heat contents and heat capacity equations were derived using the Shomate function for the solid compounds and the least square method for liquid phases. Based on the third law method, the Gibbs free energies of formation were determined from the obtained heat capacity data.

Original languageEnglish
Pages (from-to)118-124
Number of pages7
Journalmaterials transactions, jim
Volume35
Issue number2
DOIs
Publication statusPublished - 1994
Externally publishedYes

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Keywords

  • drop calorimeter
  • Gibbs free energy of formation
  • heat content
  • heat of fusion
  • II-VI compound
  • IV-VI compound
  • melting point
  • Shomate function

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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