<i>In Situ</i> Cw ESR Study on Redox Behavior and Phase Heterogeneity in A-Site-Deficient Lanthanum Iron Manganite Perovskite Catalysts.

ABSTRACT: Temperature-dependent in situ continuous wave (cw) electron spin resonance (ESR) measurements are used for investigating changes in magnetization upon reduction and reoxidation in La-deficient La _x Fe_0.7Mn_0.3O₃ (x < 1) samples to advance the understanding of structural and chemical changes in these materials where A-site deficiency was shown to affect catalytic performance. For these defect-rich mixed perovskites with ferromagnetic ordering, the magnetic properties as characterized by in situ cw ESR spectroscopy are sensitive probes for structural changes in these materials. To this end, the ESR spectra observed in a redox cycle in H₂- and O₂-containing atmospheres not only show structural changes

SUBMITTER: Asadi Z 

PROVIDER: S-EPMC12010419 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature