Core-shell-structured magnetic ternary nanocubes.
We report a novel core-shell-structured ternary nanocube of MnZn ferrite synthesized by controlling the reaction temperature and composition in the absence of conventionally used reducing agents. The highly monodispersed core-shell structure consists of an Fe(3)O(4) core and an MnZn Ferrite shell. The observation of a Moiré pattern indicates that the core and the shell are two highly crystalline materials with slightly different lattice constants that are rotated relative to each other by a small angle. The ternary core-shell nanocubes display magnetic properties regulated by a combination of the core-shell composition and exhibit an increased coercivity and field-cooled/zero-field-cooled characteristics drastically different from those of regular MnZn ferrite nanoparticles. The ability to engineer the spatial nanostructures of ternary magnetic nanoparticles in terms of shape and composition offers atomic-level versatility in fine-tuning the nanoscale magnetic properties.
Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States.
Lingyan
L
Wang
Xin
X
Wang
Jin
J
Luo
Bridgid N
BN
Wanjala
Chongmin
C
Wang
Natasha A
NA
Chernova
Mark H
MH
Engelhard
Yao
Y
Liu
In-Tae
IT
Bae
Chuan-Jian
CJ
Zhong