Heat capacity measurements on BaTa2O6 and derivation of its thermodynamic functions

Ilhan M., Mergen A., SARIOĞLU C., YAMAN C.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, cilt.128, sa.2, ss.707-711, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 128 Sayı: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s10973-016-5988-3
  • Dergi Adı: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.707-711
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

Heat capacity measurements of barium tantalate (BaTa2O6) were carried out by using a differential scanning calorimeter at temperatures between 323 and 1323 K. From the heat capacity values of BaTa2O6, other thermodynamic functions (enthalpy and entropy increments) were derived between 298.15 and 1323 K. The C (p,m) (298.15) value of BaTa2O6 was computed as 184.857 J mol(-1) K-1. Moreover, fitted heat capacities exhibited good agreement with Neumann-Kopp rule at the temperatures between 298.15 and 1300 K.