Template Preparation Of One Dimensional Magnetic Nanomaterials And Characterization

This paper gets the high ordered one-dimension Ni and Co nanotube/nanowire (NT/NW) by electrochemical deposition in the AAO template. Its diameter is in arrangement with the diameter of AAO pore size and it has the neat order in the whole template range. We analyze the influence of different deposition conditions like deposition voltage, deposition electrolyte concentration, temperature, PH on the morphology of Co NT/NW. The results deliberate that the deposition voltage and deposition electrolyte concentration have more influence than temperature and PH. Because the Co tends to be corroded by the NaOH solution, we find the more appropriate processing solution is the mixture of chromium acid and phosphoric acid.Due to the excellent magnetic properties of rare-earth of Nd, we dope it into the transition magnetic metal to get the permanent materials with excellent properties. This paper doped it into magnetic materials nickel and cobalt and got the one-dimension rare-earth magnetic nanoalloy by the electrochemical deposition. The deposition contends one after another deposition and joint deposition. Among them, the one after another way has got obvious core-shell structure, which is a feasible method of getting the novel nanostructure. In addition, the doping of rare-earth neodymium gives the improvement of the corrosion resistance of cobalt.According to the successful deposition of one-dimension Ni, Co NT/NW and rare-earth alloy, we explored the growing mechanism and the formation process of NT/NW. Then we put forward the three-direction competition mechanism. In our opinion, the growing of NT/NW has three directions, and the final nanostructure depends on the competition of the three directions. On the base of the result, we can deposit another metal into the former nanotube to get the get the core-shell structure.