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- Title
Electrochemical preparation and magnetic properties of submicron CoPb dendrites.
- Authors
Chen-Zhong Yao; Hui-Xuan Ma; Xi-Sheng Zhang; Li-Xin Meng; Li-Ping Zhao; Ling Tai; Yu-Chun Wang; Qiao-Juan Gong; Ye-Xiang Tong
- Abstract
Magnetic dendrites of CoPb were fabricated through potentiostatic electrochemical deposition on Cu substrates in boric acid solution at room temperature. The as-deposited dendrites were determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), electrodeposition (ED), and energy dispersive X-ray spectroscopy (EDS). SEM results indicate that the CoPb dendrites are highly symmetrical in structures. The diameters of the branches are about 50 ~ 200 nm, and the backbones are continuous with lengths up to about 10 μm. XRD patterns show that the as-deposited dendrites are solid solutions. The annealing treatment can result in the recrystallization of these metastable alloys into two separate phases. TEM, ED, and EDS results also reveal that the backbones and the branches of the dendrites are composed of different amounts of cobalt. Magnetic measurements confirm that the as-deposited CoPb dendrites have a softly ferromagnetic behavior, and a small coercive force (about 80 Oe). Also the saturation magnetizations of the CoPb dendrites decrease rapidly with the temperature increasing.
- Subjects
DENDRITIC crystals; ELECTRON diffraction; MAGNETIC properties; SCANNING electron microscopy; X-ray diffraction; CRYSTALLIZATION
- Publication
Journal of Solid State Electrochemistry, 2011, Vol 15, Issue 6, p1193
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-010-1181-y