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Synthesis, characterization, and magnetic properties of flower‐like nickel materials
Author(s) -
Zhou W.,
Guo L.,
He L.,
Chen C. P.
Publication year - 2008
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200622610
Subject(s) - high resolution transmission electron microscopy , crystallite , coercivity , transmission electron microscopy , nickel , microstructure , materials science , scanning electron microscope , characterization (materials science) , chemical engineering , bromide , resolution (logic) , crystallography , nanotechnology , analytical chemistry (journal) , chemistry , metallurgy , composite material , inorganic chemistry , chromatography , physics , artificial intelligence , computer science , engineering , condensed matter physics
Flower‐like Ni particles about 1 µm in diameter have been synthesized by means of a mild chemical solution method with a soft template of hexadecyltrimethy‐lammonium bromide (CTAB). Analysis of the structures by scanning electron microscopy (SEM) and high‐resolution transmission electron microscopy (HRTEM) reveal that they are composed of particles with an average diameter of 250 nm. The particles are composed of grains 20–30 nm in size. Based on a series of experiments, the growing process of the flower‐like structure is described briefly. The coercivity of the as‐grown product at 300 K is about 90 Oe. It is small in comparison with that of the reported flower‐like microstructure composed of nickel nanotips, ∼232 Oe. This is attributed to its shape anisotropy and polycrystalline structure. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)