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Particle Moment Canting in CoFe2O4 Nanoparticles



K. Hasz, Y. Ijiri, Kathryn L. Krycka, Julie Borchers, R. A. Booth, S. Oberdick, S. A. Majetich


Polarization-analyzed small-angle neutron scattering methods are used to determine the spin morphology in high crystalline anisotropy, 11 nm diameter CoFe2O4 nanoparticle assemblies with randomly oriented easy axes. In moderate to high magnetic fields, the nanoparticles adopt a uniformly canted structure, rather than forming domains, shells or other arrangements. The observed canting angles agree quantitatively with those predicted from an energy model dominated by Zeeman and anisotropy competition, with implications for the technological use of such nanoparticles.
Physical Review B


SANS, magnetic nanoparticles, magnetic anisotropy, moment canting, polarized neutron scattering


Hasz, K. , Ijiri, Y. , Krycka, K. , Borchers, J. , Booth, R. , Oberdick, S. and Majetich, S. (2014), Particle Moment Canting in CoFe<sub>2</sub>O<sub>4</sub> Nanoparticles, Physical Review B, [online], (Accessed April 17, 2024)
Created November 18, 2014, Updated October 12, 2021