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首页> 外文期刊>Journal of Crystal Growth >Observation of twin-like composition modulation and phase separation with long-range order induced by oxygen deficiency in single crystal manganites
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Observation of twin-like composition modulation and phase separation with long-range order induced by oxygen deficiency in single crystal manganites

机译:单晶锰矿中氧缺乏引起的双态长程双组分调制和相分离的观察

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摘要

Single crystal La_(1/3)Sr_(1/3)MnO3_(3-δ) manganite with an unusual structure was obtained by the optical-floating method with controlled growth in a flowing argon atmosphere. A modulated twin-like structure with phase separation characteristics in the long-range order is found. The energy-dispersive X-ray spectroscopy measurement reveals that there is a strong chemical fluctuation for different stripes, i.e. resulting from the nonstoichiometry due to oxygen deficiency. After annealing, the twin-like stripe phase disappears and the single crystal shows excellent properties. These results may be of great significance for controlled growth of oxide electronics materials with artificial superstructure-like technique.
机译:通过光浮法在流动的氩气气氛中控制生长,得到具有异常结构的单晶La_(1/3)Sr_(1/3)MnO3_(3-δ)锰矿。发现了具有长程相分离特性的调制双胞胎结构。能量色散X射线光谱法测量表明,对于不同的条带存在强烈的化学波动,即,由于氧缺乏导致的非化学计量引起的。退火后,双条纹状相消失,单晶显示出优异的性能。这些结果对于利用类人工超结构技术控制氧化物电子材料的生长可能具有重要意义。

著录项

  • 来源
    《Journal of Crystal Growth》 |2010年第13期|P.1963-1967|共5页
  • 作者单位

    Department of Physics, Shanghai University, Shangda Road 99, Shanghai 200444, China;

    rnDepartment of Physics, Shanghai University, Shangda Road 99, Shanghai 200444, China;

    rnDepartment of Physics, Shanghai University, Shangda Road 99, Shanghai 200444, China;

    rnDepartment of Physics, Shanghai University of Electric Power, Shanghai 200090, China;

    rnDepartment of Physics, Shanghai University, Shangda Road 99, Shanghai 200444, China;

    rnDepartment of Physics, Shanghai University, Shangda Road 99, Shanghai 200444, China;

    rnDepartment of Physics, Shanghai University, Shangda Road 99, Shanghai 200444, China;

  • 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

    A1. Modulated structure; A1. Floating-zone technique; A2. Single crystal growth; B1. CMR manganites; B2. Oxygen deficient;

    机译:A1。调制结构;A1。浮区技术;A2。单晶生长;B1。 CMR锰矿;B2。缺氧;

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