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Defects related room temperature ferromagnetism in p-type (Mn, Li) co-doped ZnO films deposited by reactive magnetron sputtering

机译:反应磁控溅射沉积p型(Mn,Li)共掺杂ZnO薄膜中相关的室温铁磁性的缺陷

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摘要

We report on the defects related room temperature ferromagnetic characteristics of Zn_(0.95-x)Mn_xLi_(0.05)O (x = 0.01,0.03,0.05 and 0.08) thin films grown on glass substrates using reactive magnetron sputtering. By increasing the Mn content, the films exhibited increases in the c-axis lattice constant, fundamental band gap energy, coercive field and remanent magnetization. Comparison of the structural and magnetic properties of the as-deposited and annealed films indicates that the hole carriers, together with defects concentrations, play an important role in the ferromagnetic origin of Mn and Li co-doped ZnO thin films. The ferromagnetism in films can be described by bound magnetic polaron models with respect to defect-bound carriers.
机译:我们报告了使用反应磁控溅射在玻璃基板上生长的Zn_(0.95-x)Mn_xLi_(0.05)O(x = 0.01、0.03、0.05和0.08)薄膜与室温铁磁特性相关的缺陷。通过增加Mn含量,这些膜表现出c轴晶格常数,基带隙能量,矫顽场和剩磁的增加。沉积和退火薄膜的结构和磁性的比较表明,空穴载流子以及缺陷浓度在Mn和Li共掺杂的ZnO薄膜的铁磁起源中起着重要的作用。膜中的铁磁性可以通过关于缺陷结合的载流子的结合磁极化子模型来描述。

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  • 来源
    《Applied Surface Science》 |2010年第8期|2453-2457|共5页
  • 作者单位

    Accelerator Laboratory, Department of Physics and Key Laboratory of Acoustic Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China Quantum Functional Semiconductor Research Center, Dongguk University, Seoul 100-715, Republic of Korea;

    Accelerator Laboratory, Department of Physics and Key Laboratory of Acoustic Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China;

    Accelerator Laboratory, Department of Physics and Key Laboratory of Acoustic Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China;

    Accelerator Laboratory, Department of Physics and Key Laboratory of Acoustic Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China;

    Accelerator Laboratory, Department of Physics and Key Laboratory of Acoustic Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China;

    Accelerator Laboratory, Department of Physics and Key Laboratory of Acoustic Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China;

    Accelerator Laboratory, Department of Physics and Key Laboratory of Acoustic Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China;

    Quantum Functional Semiconductor Research Center, Dongguk University, Seoul 100-715, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ferromagnetism; thin films; reactive magnetron sputtering; ZnO;

    机译:铁磁性薄膜;反应磁控溅射;氧化锌;

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