Structure,defect chemistry,and proton conductivity in nominally Sr-doped Ba3La(PO4)3 |
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| Authors: | N. Sharova H. Fjellv?g T. Norby |
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| Affiliation: | Department of Chemistry, University of Oslo, Centre for Materials Science and Nanotechnology, P.O. Box 1126 Blindern, NO-0318 Oslo, Norway |
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| Abstract: | The AC conductivity of eulytite-structured Ba3La(PO4)3 with 2 mol% Sr substituted for La has been investigated in the range 300–1300 °C at different oxygen and water vapor (H2O or D2O) partial pressures. The overall sample impedance has contributions from bulk (grain interior) and grain boundaries. It is concluded from the H/D isotope effect that the bulk conductivity is mainly protonic. The defect chemistry leading to a content of protons is discussed. |
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