Tri-axial magnetic alignment and magnetic anisotropies in misfit-layered calcium-based cobaltites doped with rare-earth ions
Year: 2024
Type: article
Abstract: In this study, we introduce an original method for quantifying tri-axial magnetic anisotropy in [Ca 2 CoO 3-δ ] 0.62 CoO 2 , and its rare earth (RE)-doped variants, [(Ca 1- x RE x ) 2 CoO 3-δ ] 0.62 CoO 2 , utilizing a modulated rotating magnetic field of 10 T. Our findings reveal a significant correlation between the magnetic anisotropy and local structure of RE ions , particularly bond lengths and coordination numbers , which influence the magnetization axes of these magnetically aligned powders. We introduce an analytical methodology employing linear equations to calculate the magnetic susceptibilities along distinct crystallographic axes, enabling the prediction of tri-axial magnetic anisotropies at elevated concentrations of Er ions. This research not only advances our understanding of magnetic anisotropy control but also paves the way for the successful fabrication of triaxially-aligned ceramics using magneto-science techniques.
Source: Open Ceramics
Institution: Kyoto University of Advanced Science
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,000
OpenAlex ID: W4403470948