Structural and magnetic properties of barium hexaferrite nanoplatelets
Source abstract
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.
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Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical Engineering, University of Southampton 1 , SO17 1BJ Southampton,
School of Engineering, Cardiff University 2 , CF24 3AA Cardiff,
School of Physics and Astronomy, Cardiff University 3 , CF24 3AA Cardiff,
Funding
Royal Academy of Engineering · Leverhulme Trust · Engineering and Physical Sciences Research Council
References (38)
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