AFM STUDY ON THE MORPHOLOGICAL CHANGE OF Zn ELECTRODEPOSIT
来源期刊：Acta Metallurgica Sinica2003年第5期
论文作者：M.Kurosaki A.L.Fan W.H.Tian
Key words：zinc electrodeposit; atomic force microscopy; crystal morphology; step growth; scanning tunnel microscopy;
Abstract: Nano-sized growth of zinc electrodeposit on the ferrite substrate has been studied by means of in situ scanning tunnel microscopy (STM) and atomic force micoscopy (AFM). It is found that the morphology of zinc electrodeposit varies from initial about 30nm granular crystals to layered platelet crystals with increasing deposition time by using in situ STM. With AFM, the results show that the platelet crystals ave hexagonal in shape and the hexagonal platelet crystals form steps perpendicular to the growth direction by side-by-side stacking along the (0001), surface. The mechanism of morphological change is discussed in details. It is proposed that these steps grow laterally as a result of the embedment of zinc ion clusters.
M.Kurosaki1，A.L.Fan2，W.H.Tian2
(1.Steel Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu, Chiba-Ken, 293-8511, Japan;
2.Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China)
Abstract:Nano-sized growth of zinc electrodeposit on the ferrite substrate has been studied by means of in situ scanning tunnel microscopy (STM) and atomic force micoscopy (AFM). It is found that the morphology of zinc electrodeposit varies from initial about 30nm granular crystals to layered platelet crystals with increasing deposition time by using in situ STM. With AFM, the results show that the platelet crystals ave hexagonal in shape and the hexagonal platelet crystals form steps perpendicular to the growth direction by side-by-side stacking along the (0001), surface. The mechanism of morphological change is discussed in details. It is proposed that these steps grow laterally as a result of the embedment of zinc ion clusters.
Key words:zinc electrodeposit; atomic force microscopy; crystal morphology; step growth; scanning tunnel microscopy;
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