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掺杂浓度对Co掺杂ZnO纳米棒的铁磁性的影响
  • ISSN号：1005-0086
  • 期刊名称：《光电子．激光》
  • 时间：0
  • 分类：O472.5[理学—半导体物理;理学—物理]
  • 作者机构：[1]信阳师范学院物理电子工程学院,河南信阳464000, [2]湘潭大学低维材料及其应用技术教育部重点实验室,湖南湘潭411105
  • 相关基金：基金项目：国家自然科学基金（10802072,11004167,11072208）、教育部新世纪人才基金（NCET-08-0687）和信阳师范学院博士科研启动基金（KYQD201001）资助项目
作者： 闫海龙[1], 王金斌[2], 钟向丽[2], 许军旗[1], 余本海[1], 肖桂灵[1]
关键词： Co掺杂ZnO纳米棒, 稀磁半导体, X射线吸收精细结构, 铁磁性, Co-doped ZnO nanorod, diluted magnetic semiconductor, X-ray absorption fine structure, ferromagnetism
中文摘要：

采用化学气相沉积（CVD）方法制备出3种掺杂浓度的Co掺杂ZnO纳米棒。使用EDX（energy dispersive X—ray）能谱，测得3种ZnO纳米棒中co元素的掺杂浓度分别为0．4、1．4和2．4％。x射线衍射（XRD）分析表明，三个样品均为ZnO的六方铅锌矿结构，并沿着C轴取向择优生长。磁化曲线显示，掺杂浓度为0．4％的co掺杂ZnO纳米棒为顺磁性，随着掺杂浓度的增大，Co掺杂ZnO纳米棒转变为铁磁性。扩展x射线吸收精细结构谱表明，co掺杂ZnO纳米棒的铁磁性源于Zn0纳米棒中的Co金属团簇。

英文摘要：

Co-doped ZnO nanorods are fabricated by the chemical vapor deposition method. Via the energy dispersive X-ray analysis, the molar ratios of three samples are 0.4 %, 1.6 % and 2.4 %. The Co-doped ZnO with doping concentration of 2.4% is still regular nanorods. ZnO nanorods with a doping concentration of 0. 4~ show a paramagnetic behavior. X-ray diffraction patterns show that the co-doped ZnO nanorods are wurtzite structure of ZnO. With the increment of doping concentration, Co-doped ZnO nanorods show ferromagnetic characteristic instead of the paramagnetic behavior. The X-ray absorption fine structure results suggest that the room-temperature ferromagnetism of co-doped ZnO nanorods originates from the Co cluster phases.

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期刊信息
  • 《光电子．激光》
  • 北大核心期刊（2011版）
  • 主管单位:天津市教育委员会
  • 主办单位:天津理工大学 中国光学学会
  • 主编：巴恩旭
  • 地址：天津市西青区宾水西道391号
  • 邮编：300384
  • 邮箱：baenxu@263.net baenxu@aliyun.com
  • 电话：022-60214470
  • 国际标准刊号：ISSN：1005-0086
  • 国内统一刊号：ISSN：12-1182/O4
  • 邮发代号:6-123
  • 获奖情况:
  • 中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:16551