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Thermal and electronic properties of CePd_3In_2

机译:CePd_3In_2的热和电子性质

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摘要

In this work, we report on the physical properties of orthorhombic CePd_3In_2 in comparison with isotypic LaPd_3In_2 (space group Pnma). X-ray powder diffraction Rietveld analysis revealed single-phase composition of both specimens CePd_3In_2 and LaPd_3In_2 confirming the CePd_3In_2 type with space group Pnma. The lattice parameters are a= 1.02788(8), 6=0.46237(4), and c=0.98765(9) nm for CePd_3In_2 and a= 1.02986(14), b=0.46424(6), and c=0.99498(13) nm for LaPd_3In_2. Physical properties of CePd_3In_2 at low temperatures are dominated by a magnetic phase transition into an antiferromagnetic ground state below T_N~2.1 K. A mutual interplay of the Kondo effect and the Rudermann-Kittel-Kasuy-Yoshida interaction is responsible for a large Sommerfeld value γ~500 mJ/mol K~2 derived from a model which simultaneously describes the Kondo effect and long-range magnetic order.
机译:在这项工作中,我们报告了正交晶CePd_3In_2与同型LaPd_3In_2(空间群Pnma)的物理性质。 X射线粉末衍射Rietveld分析揭示了CePd_3In_2和LaPd_3In_2两个样品的单相组成,证实了CePd_3In_2型具有空间群Pnma。对于CePd_3In_2,晶格参数为a = 1.02788(8),6 = 0.46237(4)和c = 0.98765(9)nm,a = 1.02986(14),b = 0.46424(6)和c = 0.99498(13) LaPd_3In_2的nm。 CePd_3In_2在低温下的物理性质主要由在T_N〜2.1 K以下的磁性相转变为反铁磁性基态所决定。近藤效应和Rudermann-Kittel-Kasuy-Yoshida相互作用共同导致大的Sommerfeld值γ 〜500 mJ / mol K〜2,来自同时描述近藤效应和远距离磁阶的模型。

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  • 来源
    《Physical review》 |2009年第20期|205104.1-205104.5|共5页
  • 作者单位

    Institute of Solid State Physics, Vienna University of Technology, Wien A-1140, Austria;

    Institute of Solid State Physics, Vienna University of Technology, Wien A-1140, Austria;

    Institute of Solid State Physics, Vienna University of Technology, Wien A-1140, Austria;

    Institute of Solid State Physics, Vienna University of Technology, Wien A-1140, Austria;

    Institute of Solid State Physics, Vienna University of Technology, Wien A-1140, Austria;

    Department of Chemistry, Moscow State University, Leninskie Gory, GSP-1, Moscow 119991, Russia Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, Wien A-1090, Austria;

    Department of Chemistry, Moscow State University, Leninskie Gory, GSP-1, Moscow 119991, Russia;

    Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, Wien A-1090, Austria;

    Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, Wien A-1090, Austria;

    Department of Chemistry, Moscow State University, Leninskie Gory, GSP-1, Moscow 119991, Russia;

    Department of Chemistry, Moscow State University, Leninskie Gory, GSP-1, Moscow 119991, Russia;

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  • 正文语种 eng
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  • 关键词

    valence fluctuation, kondo lattice, and heavy-fermion phenomena; static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.); antiferromagnetics;

    机译:价态波动;近藤晶格和重费米子现象;静态特性(阶数参数;静态磁化率;热容量;临界指数等);反铁磁;

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