What question did this study set out to answer?

This research aims to synthesize and characterize a novel B-cation ordered brownmillerite in the Ba–In–Fe–O system.

May 20, 2026Chemical Communications0 citationsOpen Access

A new cation- and vacancy-ordered Brownmillerite in the Ba–In–Fe–O system revealing hidden order in its cubic counterpart

MCMonica CerettiÉcole Nationale Supérieure de Chimie de Montpellier AMAnna MarsicanoÉcole Nationale Supérieure de Chimie de Montpellier GCGabriel J CuelloPaul Scherrer Institute

Key Points

This research aims to synthesize and characterize a novel B-cation ordered brownmillerite in the Ba–In–Fe–O system.
Synthesis using an unconventional ultra-high-vacuum method
Characterization through neutron diffraction
Total scattering techniques to study structural properties
The newly synthesized Ba2InFeO5 brownmillerite shows distinct cation and vacancy ordering
Neutron diffraction confirms unique structural features compared to the cubic perovskite
Total scattering analysis reveals hidden order in the cubic counterpart

Abstract

The synthesis and characterization of a previously unreported B-cation ordered Ba2InFeO5 brownmillerite, obtained by an unconventional ultra-high-vacuum method, are reported alongside its cubic perovskite-type counterpart. Neutron diffraction and total scattering...

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