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通过电沉积法制备多层Ag/Co磁性纳米线的合成与表征的初步研究。

A preliminary study on the synthesis and characterization of multilayered Ag/Co magnetic nanowires fabricated via the electrodeposition method.

作者信息

Peng Cheng-Hsiung, Wu Tsung-Yung, Hwang Chyi-Ching

机构信息

Department of Chemical and Materials Engineering, Ming Hsin University of Science and Technology, Hsinfeng, Hsinchu 304, Taiwan.

出版信息

ScientificWorldJournal. 2013 Aug 29;2013:837048. doi: 10.1155/2013/837048. eCollection 2013.

DOI:10.1155/2013/837048
PMID:24072985
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3773445/
Abstract

A single-bath electrodeposition method was developed to integrate multilayer Ag/Co nanowires with a commercial anodic alumina oxide (AAO) template with a pore diameter of 100-200 nm. An electrolyte system containing silver nitride and cobalt sulfide was studied using cyclic voltammetry, and the electrodeposition rate was varied to optimize the electrodeposition conditions. A constant stepwise potential and a variable cation ratio of [Co²⁺]/[Ag⁺] were used during electrodeposition. After the dissolution of the template in aqueous NaOH solution, multilayered Ag/Co nanowires were obtained with a composition of [Co]/[Ag₈₀Co₂₀], as identified by XRD and TEM, when [Co²⁺]/[Ag⁺] = 150. By annealing at 200°C for 1 h, uniformly structured (Co₉₉.₅₇/Ag₁₀₀) nanowires were obtained. Compared with pure Co nanowires, the magnetic hysteresis loops showed a greater magnetic anisotropy for (Co₉₉.₅₇/Ag₁₀₀) nanowires than for pure Co nanowires, corresponding to a change in the easy axis upon magnetization.

摘要

开发了一种单浴电沉积方法，将多层银/钴纳米线与孔径为100 - 200纳米的商用阳极氧化铝（AAO）模板集成在一起。使用循环伏安法研究了含有氮化银和硫化钴的电解质体系，并改变电沉积速率以优化电沉积条件。电沉积过程中采用恒定的逐步电位和可变的阳离子比[Co²⁺]/[Ag⁺]。在模板溶解于氢氧化钠水溶液后，通过X射线衍射（XRD）和透射电子显微镜（TEM）鉴定，当[Co²⁺]/[Ag⁺] = 150时，获得了组成是[Co]/[Ag₈₀Co₂₀]的多层银/钴纳米线。通过在200°C退火1小时，得到了结构均匀的(Co₉₉.₅₇/Ag₁₀₀)纳米线。与纯钴纳米线相比，磁滞回线表明(Co₉₉.₅₇/Ag₁₀₀)纳米线比纯钴纳米线具有更大的磁各向异性，这对应于磁化时易轴的变化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/8b859cb17789/TSWJ2013-837048.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/169d20ecdc35/TSWJ2013-837048.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/bdeba18dda8a/TSWJ2013-837048.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/dcf73bdbcd9d/TSWJ2013-837048.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/a0c9dcdeb595/TSWJ2013-837048.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/df767936d0df/TSWJ2013-837048.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/8b859cb17789/TSWJ2013-837048.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/169d20ecdc35/TSWJ2013-837048.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/bdeba18dda8a/TSWJ2013-837048.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/dcf73bdbcd9d/TSWJ2013-837048.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/a0c9dcdeb595/TSWJ2013-837048.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/df767936d0df/TSWJ2013-837048.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03b7/3773445/8b859cb17789/TSWJ2013-837048.006.jpg

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