National Tsing Hua University Institutional Repository:Cross-sectional shape modulation of physical properties in ZnO and Zn1-xCoxO nanowires
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 54367/62174 (87%)
造访人次 : 13690127      在线人数 : 48
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTHU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻
    National Tsing Hua University Institutional Repository > 原子科學院  > 工程與系統科學系 > 期刊論文 >  Cross-sectional shape modulation of physical properties in ZnO and Zn1-xCoxO nanowires


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/48157


    题名: Cross-sectional shape modulation of physical properties in ZnO and Zn1-xCoxO nanowires
    作者: Z Y Wu;I J Chen;Y F Lin;S P Chiu;F R Chen;J J Kai;J J Lin;W B Jian
    教師: 開執中
    日期: 2008
    出版者: Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft
    關聯: New Journal of Physics, v 10, March 12, 2008
    关键词: TRANSMISSION ELECTRON-MICROSCOPY
    ZINC-OXIDE
    ROOM-TEMPERATURE
    BUILDING-BLOCKS
    SHALLOW DONOR
    FERROMAGNETISM
    DEVICES
    PHOTOLUMINESCENCE
    NANOSTRUCTURES
    TRANSPORT
    摘要: We have prepared comparable-diameter ZnO and Zn1-xCoxO nanowires with both circular and hexagonal cross-sections. The average diameters are similar to 113 and similar to 134 nm for cylindrical and hexagonal nanowires, respectively. The as-grown nanowires have been characterized via structure, electrical conductivity and photoluminescence (PL) spectrum measurements. Pure ZnO nanowires were Co-ion implanted to make magnetic Zn1-xCoxO nanowires for magnetization studies. Bumpier edge surfaces on a nanometre scale, higher densities of stacking faults and a bending feature along the growth direction have been found in cylindrical ZnO nanowires. As compared with hexagonal nanowires, we have observed relatively higher conductivities in cylindrical nanowires, which implied large numbers of shallow donors existing in the latter nanowires. The cylindrical ZnO nanowires also displayed intensified green defect emission and considerably more stacking faults in the crystalline structure. In addition, we have found increased magnetization and stronger ferromagnetic ordering in cylindrical than in hexagonal Zn1-xCoxO nanowires, and have experimentally identified that the point defects of either Zn interstitials or O vacancies played governing roles in ferromagnetism. We conclude that the cross-sectional shape effect originating a varied point defect density can profoundly modulate the structural, electrical, optical as well as magnetic properties of ZnO and Zn1-xCoxO nanowires.
    URI: http://www.iop.org/EJ/njp
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/48157
    显示于类别:[工程與系統科學系] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML439检视/开启


    在NTHUR中所有的資料項目都受到原著作權保護,僅提供學術研究及教育使用,敬請尊重著作權人之權益。若須利用於商業或營利,請先取得著作權人授權。
    若發現本網站收錄之內容有侵害著作權人權益之情事,請權利人通知本網站管理者(smluo@lib.nthu.edu.tw),管理者將立即採取移除該內容等補救措施。

    SFX Query

    與系統管理員聯絡

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈