Unlocking stable intermediate states in SrFeO₃₋δ through voltage control of oxygen non-stoichiometry

Published: July 6, 2026

Ionotronic devices harvest controlled oxygen-ion movements to tailor materials properties, such as metal-to-insulator transitions, or ferromagnetic to anti ferromagnetic transitions. Under the guidance of IREC (Barcelona, Spain) and the team of Albert Tarancon, we could follow the ion-removal from SrFeO3 thin films, pushing it in a controlled manner from perovskite to Brownmillerite phase and back. First author Paul Nizet visited the PGI-7 team to perform operando x-ray diffraction measurements in Jülich.

Journal: Nature Communications volume 17, Article number: 8289 (2026)
Authors: Paul Nizet, Francesco Chiabrera, Alicia Ruiz-Caridad, Anton Kaus, Ona Falcó, Lixin Zhang, Lluís Yedra, Sònia Estradé, Regina Dittmann, Francesca Peiró, Felix Gunkel & Albert Tarancón
DOI: https://doi.org/10.1038/s41467-026-75149-8
Funding:
Funding: POF 5233 - Memristive Materials and Devices (POF4-523) (POF4-523)

Contact

Dr. Felix Gunkel

Senior Researcher / Group leader Associate Professor, University of Twente (Guest @ IMS)

• Peter Grünberg Institute (PGI)
• Electronic Materials (PGI-7)

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