Ferromagnetic domain structures and nanoclusters in Nd(1/2)Sr(1/2)MnO3.
Magnetic domain structures of Nd(1/2)Sr(1/2)MnO3 were investigated by means of low-temperature Lorentz electron microscopy. On cooling, magnetic domain walls started to appear at 250 K, and they were oriented straight along the [100] and [110] directions. With a further decrease in temperature, the volume of each magnetic domain increased with discontinuous domain-wall jumps. A characteristic granular image was observed at around 140 K, near the charge-ordering transition temperature. We consider that this originated from ferromagnetic nanoclusters that appeared in the antiferromagnetic matrix.
Asaka
T
T
Advanced Materials Laboratory (AML), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.
Anan
Y
Y
Nagai
T
T
Tsutsumi
S
S
Kuwahara
H
H
Kimoto
K
K
Tokura
Y
Y
Matsui
Y
Y