• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Influence of p- and n-type doping on the transport properties of the Nowotny chimney-ladder compounds RuAl_2 and RuGa_2
【24h】

Influence of p- and n-type doping on the transport properties of the Nowotny chimney-ladder compounds RuAl_2 and RuGa_2

机译：p型和n型掺杂对Nowotny烟囱阶梯化合物RuAl_2和RuGa_2的输运性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Nowotny chimney-ladder compounds RuAl_2 and RuGa_2 have been substituted with p- and n-type dopants to study the resistivity, Seebeck and Hall coefficients, and thermal conductivity of resulting compounds in the temperature range of 80-300 K. The resistivity and Seebeck coefficient suggest that these compounds are degenerate semiconductors. Hall measurements reveal that the carrier concentration has indeed been changed by an order of magnitude, particularly in p-type RuGa_2 by substituting Cr and Mn. Compared to p-type samples, the resistivity is an order of magnitude larger for n-type samples, for a similar level of carrier concentration. Interestingly, the hole mobility is two to three orders of magnitude larger, reaching the highest value of ～750 cm~2/V.s. The electron mobility is temperature independent and is typically in the range of ～1-4 cm~2/V.s. Thermal conductivity shows characteristics of mixed scattering with impurity scattering contributing appreciably in heavily substituted compositions.
机译：Nowotny烟囱梯状化合物RuAl_2和RuGa_2已被p型和n型掺杂剂取代，以研究在80-300 K的温度范围内所得化合物的电阻率，塞贝克系数和霍尔系数以及导热系数。电阻率和塞贝克系数这表明这些化合物是简并的半导体。霍尔测量表明，载流子浓度确实发生了一个数量级的变化，特别是在p型RuGa_2中，通过替代Cr和Mn。与p型样品相比，在载流子浓度相似的情况下，n型样品的电阻率要大一个数量级。有趣的是，空穴迁移率大了2-3个数量级，达到了〜750 cm〜2 / V.s的最大值。电子迁移率与温度无关，通常在约1-4 cm〜2 / V.s的范围内。热导率显示出混合散射和杂质散射的特性，在重取代的组合物中有明显贡献。

著录项

  • 来源
    《Journal of Materials Research》 |2011年第15期|p.1907-1912|共6页
  • 作者

    V. Ponnambalam; Gloria Lehr; Donald T. Morelli;

  • 作者单位

    Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226;

    Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226;

    Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824-1226;

  • 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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号