TY - JOUR
T1 - Metallic cobalt microcrystals with flowerlike architectures
T2 - Synthesis, growth mechanism and magnetic properties
AU - Wang, Run Han
AU - Jiang, Ji Sen
AU - Hu, Ming
PY - 2009/7/1
Y1 - 2009/7/1
N2 - Well-defined, three-dimensional (3D) flowerlike metallic Co microcrystals with several radiating hexagonal-tapered petals assembled by particles size of 150-250 nm were fabricated via a facile hydrothermal reduction route under a fixed basic condition. The morphology and structure of the products were characterized by scanning electronic microscopy (SEM), energy-dispersive X-ray (EDX), transmission electron microscopy (TEM), selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and powder X-ray diffraction (XRD). The probable formation mechanism of the flowerlike Co microcrystals was discussed based on the experimental results. Magnetic properties of Co microcrystals were investigated by a commercial Physical Properties Measurement System (PPMS). The flowerlike products exhibited ferromagnetic characteristics with a saturation magnetization of 128.1 emu/g and a coercivity of 232.5 Oe at room temperature. Compared to the coercivity value of bulk Co, the products displayed a remarkable enhanced value due to their special morphology.
AB - Well-defined, three-dimensional (3D) flowerlike metallic Co microcrystals with several radiating hexagonal-tapered petals assembled by particles size of 150-250 nm were fabricated via a facile hydrothermal reduction route under a fixed basic condition. The morphology and structure of the products were characterized by scanning electronic microscopy (SEM), energy-dispersive X-ray (EDX), transmission electron microscopy (TEM), selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and powder X-ray diffraction (XRD). The probable formation mechanism of the flowerlike Co microcrystals was discussed based on the experimental results. Magnetic properties of Co microcrystals were investigated by a commercial Physical Properties Measurement System (PPMS). The flowerlike products exhibited ferromagnetic characteristics with a saturation magnetization of 128.1 emu/g and a coercivity of 232.5 Oe at room temperature. Compared to the coercivity value of bulk Co, the products displayed a remarkable enhanced value due to their special morphology.
KW - A. Metals
KW - B. Chemical synthesis
KW - B. Crystal growth
KW - D. Magnetic properties
KW - D. Microstructure
UR - https://www.scopus.com/pages/publications/67349146722
U2 - 10.1016/j.materresbull.2009.02.016
DO - 10.1016/j.materresbull.2009.02.016
M3 - 文章
AN - SCOPUS:67349146722
SN - 0025-5408
VL - 44
SP - 1468
EP - 1473
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 7
ER -