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Bibliographic Details
Main Authors: Flynn, Steven, Benyacko, Caeli L., Mihalik, Matúš, Lee, Jared, Ma, Fuyan, Bates, Michael E., Sinha, Shubham, Abboud, Khalil A., Mihalik, Marian, Meisel, Mark W., Hamlin, James J.
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2504.00788
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Table of Contents:
  • Samples of Co were grown directly in the ferromagnetic state under equilibrium conditions using a cobalt sulfide flux. Magnetic fields up to 9 T were applied during growth, and isolated Co products exhibit progressively elongated morphologies, from cubes to rectangular rods to needle-like tendrils with poorly-defined facets. The degree of elongation of the major axis was found to correlate with magnetic field direction, strength, and gradient. Two-dimensional X-ray diffraction data indicate some level of polycrystalline-like samples, and quantitative analyses (Le Bail and Rietveld) of the one-dimensional data confirm the presence of hcp and fcc phases. The magnetic responses indicate a partial alignment of the magnetic easy-axis of the hcp phase along the magnetic field present during growth.