Abstract
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.
Repository Citation
Hasz, K., Y. Ijiri, K.L. Krycka, J.A. Borchers, R.A. Booth, S. Oberdick, and S.A. Majetich. 2014. “Particle Moment Canting in CoFe2O4 Nanoparticles.” Physical Review B 90(18): 180405.
Publisher
American Physical Society
Publication Date
11-1-2014
Publication Title
Physical Review B
Department
Physics and Astronomy
Document Type
Article
DOI
https://dx.doi.org/10.1103/PhysRevB.90.180405
Keywords
Neutron-scattering, Anisotropy, Magnetism, Spin
Document Version
published
Language
English
Format
text
