Ceramic and transport properties of halogen-substituted strontium ferrite
Source abstract
Abstract
Abstract An attempt of fluorine and chlorine substitution for oxygen in strontium ferrite SrFeO 3– δ was undertaken in search of a new means of influence on the oxide properties. An uncontrollable removal of halogen-ions from oxides during synthesis was detected. Nevertheless, residual halogens were found to provide a notable impact on ion conductivity and oxide stability under reducing conditions. More than twice higher ion conductivity relative to SrFeO 3– δ was recorded in materials with nominal compositions SrFeO 2.8– δ F 0.2 , SrFeO 2.6– δ Cl 0.4 , and SrFeO 2.4– δ Cl 0.6 . The strong effect of halogen addition on ceramic properties of oxides was revealed. While SrFeO 3– δ was known for its poor sinterability, adding 0.2 mol of fluorine or chlorine during the synthesis of SrFeO 3– δ was shown to result in successful obtaining gas-tight ceramics.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Magnetic and transport properties of perovskites and related materials · Electronic and Structural Properties of Oxides
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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