Apparent ferrimagnetism in Sr(Fe0.2Mn0.2Co0.2Ti0.2V0.2)O3 high-entropy oxide perovskite thin films

Balaram Regmi; Duncan Miertschin; Maria Cocconcelli; Federico Stramaglia; Davis Crater; Lide Yao; Cinthia Piamonteze; Sebastiaan van Dijken; Alan Farhan

doi:10.1063/5.0181333

AIP Advances (Feb 2024)

Apparent ferrimagnetism in Sr(Fe0.2Mn0.2Co0.2Ti0.2V0.2)O3 high-entropy oxide perovskite thin films

Balaram Regmi,
Duncan Miertschin,
Maria Cocconcelli,
Federico Stramaglia,
Davis Crater,
Lide Yao,
Cinthia Piamonteze,
Sebastiaan van Dijken,
Alan Farhan

Affiliations

Balaram Regmi: Department of Physics, Baylor University, Waco, Texas 76798, USA
Duncan Miertschin: Department of Physics, Baylor University, Waco, Texas 76798, USA
Maria Cocconcelli: Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy
Federico Stramaglia: Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
Davis Crater: Department of Physics, Baylor University, Waco, Texas 76798, USA
Lide Yao: OtaNano-Nanomicroscopy Center, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland
Cinthia Piamonteze: Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
Sebastiaan van Dijken: Department of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland
Alan Farhan: Department of Physics, Baylor University, Waco, Texas 76798, USA

DOI: https://doi.org/10.1063/5.0181333
Journal volume & issue: Vol. 14, no. 2
pp. 025023 – 025023-6

Abstract

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We present a study on the structural and magnetic properties of Sr(Fe0.2Mn0.2Co0.2Ti0.2V0.2)O3 (S5BO) high-entropy oxide perovskite thin films. We use synchrotron-based x-ray absorption spectroscopy employing x-ray magnetic circular dichroism (XMCD) and reveal an enhanced presence of high-spin Co2+, which appears to feature a magnetic response opposing that of the two other magnetic transition metal elements, Fe and Mn. This is marked by both opposite XMCD signals and an inverted XMCD hysteresis loop for Co, while Fe and Mn show regularly shaped hysteresis curves, as the picture of a ferrimagnetic ground state emerges for S5BO.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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