Synthesis, characterization, and magnetic properties of flower-like nickel materials

✍ Scribed by Zhou, W. ;Guo, L. ;He, L. ;Chen, C. P.

• Book ID: 105363979
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 223 KB
• Volume: 205
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200622610

✦ Synopsis

Abstract

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)