A. Krol, C.J. Sher, et al.
Surface Science
Resonant magnetic x-ray scattering from dense assemblies of 9-nm-diameter ε-Co and hcp-Co superparamagnetic particles is reported. For lower anisotropy ε-Co assemblies remanent scattering is significantly enhanced compared to a random orientation model, indicating that prefrred intermoment orientations with antiferromagnetic character exist with spatial frequencies ranging over several nearest neighbors. This interaction-mediated collective behavior is consistent with dipolar energies and exists well into the superparamagnetic regime, revealing that such thermally activated motion is highly correlated. ©2005 The American Physical Society.
A. Krol, C.J. Sher, et al.
Surface Science
Zelek S. Herman, Robert F. Kirchner, et al.
Inorganic Chemistry
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
Andreas C. Cangellaris, Karen M. Coperich, et al.
EMC 2001