Synthesis, Optical, and Magnetic Properties of Ba2Ni3F10Nanowires.
A low-temperature hydrothermal route has been developed, and pure phase Ba2Ni3F10nanowires have been successfully prepared under optimized conditions. Under the 325 nm excitation, the Ba2Ni3F10nanowires exhibit three emission bands with peak positions locating at 360, 530, and 700 nm, respectively. Combined with the first-principles calculations, the photoluminescence property can be explained by the electron transitions between the t2gand egorbitals. Clear hysteresis loops observed below the temperature of 60 K demonstrates the weak ferromagnetism in Ba2Ni3F10nanowires, which has been attributed to the surface strain of nanowires. Exchange bias with blocking temperature of 55 K has been observed, which originates from the magnetization pinning under the cooling field due to antiferromagnetic core/weak ferromagnetic shell structure of Ba2Ni3F10nanowires.
Department of Physics, Southeast University , Nanjing 211189, China.
Shuang
S
Zhou
Ji
J
Wang
Department of Physics, Southeast University , Nanjing 211189, China.
Yakui
Y
Weng
Department of Physics, Southeast University , Nanjing 211189, China.
Zhangting
Z
Wu
Department of Physics, Southeast University , Nanjing 211189, China.
Zhenhua
Z
Ni
Department of Physics, Southeast University , Nanjing 211189, China.
Qingyu
Q
Xu
Jun
J
Du
Department of Physics, Southeast University , Nanjing 211189, China.
Shuai
S
Dong
exchange bias; fluorides; multiferroic; nanowire; photoluminescence