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Spiral spin order of self-assembled Co nanodisk arrays
Youhui Gao1, Yuping Bao, Alec B Pakhomov
1Department of Physics, Beijing Normal University, Beijing 100875, People's Republic of China. ygao@bnu.edu.cn
Physical Review Letters
|May 23, 2006
Abstract:
Spin order in hexagonal close packed cobalt nanodisk rows is quantitatively determined by off-axis electron holography. Periodic variation in the density of the local magnetic flux shows features of a spiral spin arrangement along the row axis, resulting from a tilted magnetic moment of nanoparticles with respect to the nanodisk axis.
