Spiral spin order of self-assembled Co nanodisk arrays.
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.
Gao
Youhui
Y
Department of Physics, Beijing Normal University, Beijing 100875, People's Republic of China. ygao@bnu.edu.cn
Bao
Yuping
Y
Pakhomov
Alec B
AB
Shindo
Daisuke
D
Krishnan
Kannan M
KM