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Ferromagnetism and exchange bias in a diluted magnetic ferroelectric oxide

机译:稀磁性铁电氧化物中的铁磁性和交换偏压

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摘要

We report on the observations of room-temperature ferromagnetism and ferroelectricity in the epitaxial thin film of BaTi_(0.98)Co_(0.02)O_3 (CBTO) with detailed structural and magnetic analyses. The films are single phase with an inhomogeneous distribution of Co~(2+) dopants in the structure. Room-temperature ferromagnetic hysteresis and ferroelectric loop were observed. Remarkably, the hysteresis loops for field cooling show the exchange bias and training effects. The complex magnetic behavior of CBTO was interpreted in the frame of bound magnetic polaron formation with inhomogeneity of dopant distribution. This work also demonstrated that exchange bias can be a helpful technique in exploring the mechanism of dopant-induced ferromagnetism.
机译:我们报告了BaTi_(0.98)Co_(0.02)O_3(CBTO)外延薄膜中的室温铁磁和铁电的观察结果,并进行了详细的结构和磁性分析。薄膜是单相的,在结构中Co〜(2+)掺杂剂分布不均匀。观察到室温铁磁滞后和铁电回路。值得注意的是,用于场冷却的磁滞回线显示出交换偏差和训练效果。 CBTO的复杂磁行为在束缚的磁极化子形成与掺杂剂分布不均匀的框架中得到了解释。这项工作还表明,交换偏压可能是探索掺杂剂引起的铁磁性机理的有用技术。

著录项

  • 来源
    《Physical review》 |2009年第11期|575-579|共5页
  • 作者单位

    Department of Physics and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China;

    Department of Physics and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China;

    Department of Physics and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China;

    Department of Physics and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China;

    Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;

    National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;

    National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;

    National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;

    National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;

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

    magnetic semiconductors; magnetic properties of monolayers and thin films;

    机译:磁性半导体单层和薄膜的磁性;

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