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Correlation of Cation Deficiency and Nanostructure to Decreased Magnetism in a Ferroelectric BiMnO3 Film

Published

Author(s)

Daniel M. Pajerowski, Lisa A. Krayer, Hyoungjeen Jeen, Julie Borchers, Amlan Biswas, Bruce Ravel

Abstract

BiMnO3 has a centrosymmetric structure that precludes ferroelectricity in bulk stoichiometric samples while some films have reported ferroelectricity along with a decreased magnetic response. This puzzle motivated a study of one such film, deposited by pulsed laser deposition onto SrTiO3. Considering microscopy, diffraction, reflectometry, and x-ray absorption experiments in concert provide details of the structure and magnetism that suggest a deficiency of Bi and Mn metals stabilizes a multiphase system that explains the decreased magnetism. Film nanostructure and strain effects are also considered.
Citation
Journal of Applied Physics
Volume
126

Keywords

Ferroelectricity, Polarized neutron reflectivity, Oxygen deficiency, magnetism

Citation

Pajerowski, D. , Krayer, L. , Jeen, H. , Borchers, J. , Biswas, A. and Ravel, B. (2019), Correlation of Cation Deficiency and Nanostructure to Decreased Magnetism in a Ferroelectric BiMnO<sub>3</sub> Film, Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=928107 (Accessed April 24, 2024)
Created August 22, 2019, Updated October 12, 2021