Thermodynamic properties of Sr-doped LaMnO3 perovskite in the La-Sr-Mn-O system

Feng Zheng, Larry R. Pederson

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Thermodynamic properties of Sr-doped perovskite-type lanthanum manganites (LSM) were generated by measuring the electromotive force (EMF) of test materials, using the solid galvanic cell technique. The cell consisted of an anode (SrO/SrF2), an electrolyte (CaF2 or SrF2) and a cathode (LSM/SrF2). Two types of cells were tested in which type I used a CaF2 electrolyte and type II used a SrF2 electrolyte. The activity of SrO substituting into various LSM compositions was calculated using the measured EMF. The Sr content was varied from 0.16 to 0.6 mol, and the temperature of interest varied from 700 to 1000°C. It was found that the SrO activity decreased with increasing temperature (at fixed composition) and increased Sr content (at fixed temperature).

Original languageEnglish
Pages (from-to)2817-2820
Number of pages4
JournalJournal of the Electrochemical Society
Issue number8
Publication statusPublished - Aug 1999
Externally publishedYes


ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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