• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Effect of the pH and electrodeposition frequency on magnetic properties of binary Co_(1-x)Sn_x nanowire arrays
【24h】

Effect of the pH and electrodeposition frequency on magnetic properties of binary Co_(1-x)Sn_x nanowire arrays

机译：pH和电沉积频率对二元Co_（1-x）Sn_x纳米线阵列磁性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ordered 30-nm Co_(1-x)Sn_x (0≤x≤ 0.78) nanowire arrays have been prepared by co-electrodeposition of Co and Sn into pores of homemade anodized aluminum oxide (AAO). The magnetic properties of the Co_(1-x)Sn_x nanowires are presented as a function of Sn content (x), annealing, electrolyte pH, electrodeposition frequency, and wave form. The result of energy-dispersive x-ray spectroscopy (EDX) showed anomalous co-deposition for Co and Sn. The nanowires have uniaxial magnetic anisotropy with easy magnetization direction along the nanowire axis due to the large shape anisotropy. As-deposited and annealed alloy nanowires, determined by x-ray diffraction (XRD), have amorphous phase. The nanowires electrodeposited at different pH and the electrodeposition frequencies have significantly different magnetic properties. Magnetization measurement showed that variation in magnetic properties of the nanowire arrays rooted in surface formation of Co(OH)_2 and Sn(OH)_2 in upper pH. The XRD patterns of Co and Co_(0.97)Sn_(0.03) of nanowires obtained at pH = 2 and 4 obviously illustrated that pH affects the crystal structure of Co nanowires but has no effect on alloy nanowires. Moreover, the precipitation process was affected by raising the electrodepositing frequency via changing the rate of reduction of solute ions. The electrodeposition wave form has no significant effect on nanowire magnetic properties. The considerable enhanced coercivity has been measured in annealed nanowires. Experimental data demonstrate that the optimized composition for annealed Co_(1-x)Sn_x nanowire is around Co_(0.97)Sn_(0.03) in which the coercivity (H_c) has a maximum value of 2030 Oe.
机译：通过将Co和Sn共电沉积到自制阳极氧化铝（AAO）的孔中，制备了有序的30 nm Co_（1-x）Sn_x（0≤x≤0.78）纳米线阵列。 Co_（1-x）Sn_x纳米线的磁性能表示为Sn含量（x），退火，电解质pH，电沉积频率和波形的函数。能量色散X射线光谱（EDX）的结果表明Co和Sn的共沉积异常。由于大的形状各向异性，纳米线具有沿纳米线轴具有容易磁化方向的单轴磁各向异性。通过X射线衍射（XRD）确定的经沉积和退火的合金纳米线具有非晶相。在不同的pH和电沉积频率下电沉积的纳米线具有显着不同的磁性。磁化测量表明，纳米线阵列的磁性能变化源于较高pH下Co（OH）_2和Sn（OH）_2的表面形成。在pH = 2和4时得到的纳米线的Co和Co_（0.97）Sn_（0.03）的XRD图谱清楚地表明，pH影响Co纳米线的晶体结构，但对合金纳米线没有影响。此外，通过改变溶质离子的还原速率，通过提高电沉积频率来影响沉淀过程。电沉积波形对纳米线的磁性没有重大影响。已经在退火的纳米线中测量到显着增强的矫顽力。实验数据表明，用于退火的Co_（1-x）Sn_x纳米线的最佳成分约为Co_（0.97）Sn_（0.03），其中矫顽力（H_c）的最大值为2030 Oe。

著录项

  • 来源
    《Journal of Materials Research》 |2014年第2期|190-196|共7页
  • 作者

    Mojgan Najafi; Amir Abbas Rafati; Mona Khorshidi Fart; Atefeh Zare;

  • 作者单位

    Department of Materials Engineering, Hamedan University of Technology (HUT), 65169, Hamedan, Iran;

    Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174 Hamedan, Iran;

    Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174 Hamedan, Iran;

    Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174 Hamedan, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号