• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica, B. Condensed Matter >Two stages of Kondo effect and competition between RKKY and Kondo in Gd-based intermetallic compound
【24h】

Two stages of Kondo effect and competition between RKKY and Kondo in Gd-based intermetallic compound

机译：G基金属间化合物中近藤效应的两个阶段以及近畿近藤与KKD之间的竞争

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

The magnetic behavior of Gd-based intermetallic compound (Gd2Al(1-x)Aux) in the form of the powder and needle, is investigated. All the samples are an orthorhombic crystal structure. Only the compound with x = 0.4 shows the Kondo effect (other compounds have a normal behavior). Although, for the compound in the form of powder, with x = 0.4, the susceptibility measurement X(T) shows two different stages. Moreover for (T > T-K2) a fall of the value of chi(T) is observable, which indicates a weak presence of ferromagnetic phase. About the two stages of Kondo effect, we observe at the first (T-K1) an increase of X(T) and in the second stage (T-K2) a new remarkable decrease of chi(T), (T-K1 > T-K2). For the sample in the form of needles, the first stage is observable only under high magnetic field. This first stage could be corresponds to a narrow resonance between Kondo cloud and itinerant electron. The second stage, which is remarkably visible for the sample in the form of the powder, can be attribute to a complete polarization of Kondo cloud. Observation of these two Kondo stages could be due to the weak presence of RKKY contribution. (c) 2006 Published by Elsevier B.V.
机译：研究了粉末和针状Gd基金属间化合物（Gd2Al（1-x）Aux）的磁行为。所有样品均为正交晶体结构。只有x = 0.4的化合物显示近藤效应（其他化合物具有正常行为）。尽管对于粉末形式的化合物，当x = 0.4时，磁化率测量值X（T）显示出两个不同的阶段。此外，对于（T> T-K2），可观察到chi（T）值下降，这表明铁磁相的存在很弱。关于近藤效应的两个阶段，我们在第一阶段（T-K1）观察到X（T）的增加，而在第二阶段（T-K2）观察到chi（T）的新的显着下降，（T-K1> T-K2）。对于针状样品，只有在强磁场下才能观察到第一阶段。该第一阶段可能对应于近藤云与流动电子之间的窄共振。第二阶段对粉末形式的样品来说非常明显，这可以归因于近藤云的完全极化。观察这两个近藤阶段可能是由于RKKY贡献的存在不足。 （c）2006年由Elsevier B.V.

著录项

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