Standard Enthalpy of Formation of Lanthanum Zirconate

Mark Bolech, Erik H.E. Cordfunke, Frans J.J.G. Janssen, Alexandra Navrotsky

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


The enthalpy of formation of lanthanum zirconate, La2Zr2O7, which is shown to have a distorted pyrochlore structure, was determined. High‐temperature solution calorimetry in molten lead borate was used to determine the heat of formation from the constituent oxides as −135.8 ± 6.4 kJ/mol at 974 K. Using additional data on the enthalpies of formation of the oxides and heat contents, this value was converted to a standard enthalpy of formation from the elements: Δf298.15=−4130.4 ± 6.8 kJ/mol.

Original languageEnglish (US)
Pages (from-to)2257-2258
Number of pages2
JournalJournal of the American Ceramic Society
Issue number8
StatePublished - Aug 1995

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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