Structural and magnetic properties of barium hexaferrite nanoplatelets

Zabek, Daniel, Veryard, Joseph, Ahmed, Yusra, van den Berg, Arjen, Askey, Joseph and Ladak, Sam ORCID: https://orcid.org/0000-0002-0275-0927 2026. Structural and magnetic properties of barium hexaferrite nanoplatelets. APL Materials 14 (5) , 051107. 10.1063/5.0264542

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Abstract

Combining unique geometric and magnetic anisotropy in barium hexaferrites has the potential to enhance the performance of advanced technological applications, such as data storage, spintronics, and medicine. Here, we report the synthesis and deposition of barium hexaferrite nanoplatelets, followed by comprehensive structural and magnetic microscopies. The topographic, physical, and morphological properties of individual nanoplatelets, clusters, and aggregates are analyzed using atomic force microscopy and electron microscopy, while magnetic properties are analyzed using magnetic force microscopy. Relevant size distributions and nanoparticle configurations for magnetic interactions have been experimentally identified and numerically analyzed. For dense nanoparticle arrangements, direct exchange coupling dominates with parallel magnetization configuration in overlapping particles. In contrast, separated particles exhibit antiparallel coupling. Detailed micro-magnetic modeling elucidates the length scales over which these two interaction regimes are dominant, paving the way for macroscopic two-dimensional and three-dimensional structures with tuned magnetic ordering.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering Schools > Physics and Astronomy
Publisher:	American Institute of Physics
ISSN:	2166-532X
Funders:	EPSRC
Projects:	EP/X012735/1
Date of First Compliant Deposit:	18 May 2026
Date of Acceptance:	21 April 2026
Last Modified:	17 Aug 2026 13:30
URI:	https://orca.cardiff.ac.uk/id/eprint/187052

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