Oxygen release/incorporation behavior in hexagonal perovskite BaFeO 3 explored by 18 O/ 16 O isotope exchange reactions

Key Points

• To investigate the oxygen release and incorporation behavior in BaFeO3 using isotope exchange reactions.
• Conducted isotope exchange reactions with 18O and 16O under controlled conditions.
• Analyzed oxygen release and incorporation behavior at temperatures up to 700 °C.
• Utilized various characterization techniques to assess structural changes.
• BaFeO3 exhibited completely reversible oxygen release and incorporation up to 700 °C.
• The high-valence Fe4+ contributed significantly to the oxygen dynamics in the material.
• The findings suggest enhanced stability and functionality of BaFeO3 in varying environments.