...
首页> 外文期刊>Physical review >Magnetism and spin-orbit coupling in Ir-based double perovskites La_(2-x)Sr_xCoIrO_6
【24h】

Magnetism and spin-orbit coupling in Ir-based double perovskites La_(2-x)Sr_xCoIrO_6

机译:Ir基双钙钛矿La_(2-x)Sr_xCoIrO_6的磁性和自旋轨道耦合

获取原文
获取原文并翻译 | 示例
           

摘要

We have studied Ir spin and orbital magnetic moments in the double perovskites La_(2-x)Sr_xCoIrO_6 by x-ray magnetic circular dichroism. In La_2CoIrO_6, Ir~(4+) couples antiferromagnetically to the weak ferromagnetic moment of the canted Co~(2+) sublattice and shows an unusually large negative total magnetic moment (-0.38 μ_B/f.u.) combined with strong spin-orbit interaction. In contrast, in Sr_2CoIrO_6, Ir~(5+) has a paramagnetic moment with almost no orbital contribution. A simple kinetic-energy-driven mechanism including spin-orbit coupling explains why Ir is susceptible to the induction of substantial magnetic moments in the double perovskite structure.
机译:我们已经通过X射线磁性圆二色性研究了双钙钛矿La_(2-x)Sr_xCoIrO_6中的Ir自旋和轨道磁矩。在La_2CoIrO_6中,Ir〜(4+)与倾斜的Co〜(2+)亚晶格的弱铁磁矩反铁磁耦合,并显示出异常大的负总磁矩(-0.38μ_B/ f.u。)和强自旋轨道相互作用。相反,在Sr_2CoIrO_6中,Ir〜(5+)具有顺磁矩,几乎没有轨道贡献。一个简单的包括自旋轨道耦合的动能驱动机制解释了为什么Ir易受双重钙钛矿结构中大量磁矩的感应的影响。

著录项

  • 来源
    《Physical review》 |2012年第22期|p.224422.1-224422.6|共6页
  • 作者单位

    Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany;

    Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany;

    Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany;

    Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany;

    Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany,Institute for Complex Materials, IFW Dresden, P.O. Box 270116, 01171 Dresden, Germany;

    Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany,Institute for Complex Materials, IFW Dresden, P.O. Box 270116, 01171 Dresden, Germany;

    Karlsruhe Institute of Technology (KIT), Inorganic Chemistry, Engesserstr. 15, D-76131 Karlsruhe, Germany;

    European Synchrotron Radiation Facility, ID-12, 6 Rue Jules Horowitz, B.P. 220, 38043 Grenoble, France;

    European Synchrotron Radiation Facility, ID-12, 6 Rue Jules Horowitz, B.P. 220, 38043 Grenoble, France;

    Institute of Materials Science, Technische Universitaet Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany;

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

    ferrimagnetics; transition metals and alloys;

    机译:亚铁磁;过渡金属和合金;

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