Barium Titanate-Coated Cobalt Ferrite Core–Shell Magnetoelectric Nanoparticles for Wireless Actuation Technologies

Duran-Toro V, Crisp R, Koçar E, Wasner F, Signorelli L, Shojaei Baghini M, di Gianvincenzo P, Heidari H, Bachmann J, Moya SE, Gregurec D (2025)

Publication Type: Journal article

Publication year: 2025

Journal

ACS Applied Nano Materials American Chemical Society

Book Volume: 8

Pages Range: 20676-20684

Journal Issue: 43

DOI: 10.1021/acsanm.5c03654

Abstract

We report a deposition pathway for barium titanate (BTO) onto hydrophobically coated cobalt ferrite (CFO) nanoparticles, resulting in the formation of magnetoelectric core–shell nanoparticles. Our strategy utilizes a bimetallic Ba and Ti oleate (BTOle) precursor, which hydrophobically interacts with dimethyldioctadecylammonium bromide (DDAB)-stabilized CFO particles during an interfacial phase transfer step. Thermal post-treatment yields a crystalline structure comprising distinguishable BTO and CFO phases, with BTO adopting a distorted cubic to tetragonal crystal phase. Magnetoelectric characterization yields a millivolt voltage-range output associated with the mechanical coupling between the piezoelectric and magnetostrictive phases. This method circumvents traditional sol–gel limitations and phase transfer hurdles, offering a streamlined route for fabricating magnetoelectric nanoparticles. Our results suggest magnetoelectric particles are suitable for incorporation in wireless actuation technologies.

Authors with CRIS profile

Ryan Crisp Lehrstuhl für Chemistry of thin film materials Julien Bachmann Lehrstuhl für Chemistry of thin film materials

Involved external institutions

CIC biomaGUNE (Centro de Investigación Cooperativa en Biomateriales) ES Spain (ES) University of Glasgow GB United Kingdom (GB)

How to cite

APA:

Duran-Toro, V., Crisp, R., Koçar, E., Wasner, F., Signorelli, L., Shojaei Baghini, M.,... Gregurec, D. (2025). Barium Titanate-Coated Cobalt Ferrite Core–Shell Magnetoelectric Nanoparticles for Wireless Actuation Technologies. ACS Applied Nano Materials, 8(43), 20676-20684. https://doi.org/10.1021/acsanm.5c03654

MLA:

Duran-Toro, Vicente, et al. "Barium Titanate-Coated Cobalt Ferrite Core–Shell Magnetoelectric Nanoparticles for Wireless Actuation Technologies." ACS Applied Nano Materials 8.43 (2025): 20676-20684.

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