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Low frequency Raman modes of Bi_(2-x)Pb_xSr_(1.6)Ln_(0.4)CuO_(6-δ)

机译:Bi_(2-x)Pb_xSr_(1.6)Ln_(0.4)CuO_(6-δ)的低频拉曼模式

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摘要

Abstract. Raman measurements were made on polycrystalline Bi_(2-x)Pb_xSr_(1.6)Ln_(0.4)CuO_(6-δ) for Ln={La, Nd, Sm, Eu} with various x and doping states. Our measurements suggest a significant Bi contribution to the 118cm~(-1) mode but not to the 70cm~(-1) mode which instead shifts to lower frequencies with increasing number of CuO_2 layers in the Bi-based family. Shifts in the O(2)_(Sr) apical oxygen mode can be attributed to unit cell contraction within experimental error.
机译:抽象。在具有各种x和掺杂态的Ln = {La,Nd,Sm,Eu}的多晶Bi_(2-x)Pb_xSr_(1.6)Ln_(0.4)CuO_(6-δ)上进行拉曼测量。我们的测量结果表明,Bi对118cm〜(-1)模式具有显着的Bi贡献,而对70cm〜(-1)模式则无贡献,而随着Bi-基族中CuO_2层数的增加,Bi模式会转移到较低的频率。 O(2)_(Sr)顶氧模式的变化可归因于实验误差内的晶胞收缩。

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  • 来源
  • 会议地点 Wellington(NZ);Wellington(NZ)
  • 作者单位

    MacDiarmid Institute, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand,Industrial Research Limited, 69 Gracefield road, PO Box 31310, Lower Hutt 5040, New Zealand,Victoria University of Wellington, PO Box 600, Wellington, New Zealand;

    Swiss Federal Institute of Technology, Lausanne, Switzerland;

    Industrial Research Limited, 69 Gracefield road, PO Box 31310, Lower Hutt 5040, New Zealand;

    Industrial Research Limited, 69 Gracefield road, PO Box 31310, Lower Hutt 5040, New Zealand;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料一般性问题;
  • 关键词

    Bi2201; raman modes;

    机译:Bi2201;拉曼模式;

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