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Magnetic phase diagram of CePt_3B_(1-x)Si_x

机译:CePt_3B_(1-x)Si_x的磁相图

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摘要

We present a study of the main bulk properties (susceptibility, magnetization, resistivity, and specific heat) of CePt_3B_(1-x)Si_x, an alloying system that crystallizes in a noncentrosymmetric lattice, and derive the magnetic phase diagram. The materials at the end point of the alloying series have previously been studied, with CePt-3B established as a material with two different magnetic phases at low temperatures (antiferromagnetic below TN = 7.8 K, weakly ferromagnetic below T_C ≈ 5 K), while CePt_3Si is a heavy fermion superconductor (T_c = 0.75 K) coexisting with antiferromagnetism (T_N = 2.2 K). From our experiments we conclude that the magnetic phase diagram is divided into two regions. In the region of low Si content (up to x ~ 0.7) the material properties resemble those of CePt_3B. Upon increasing the Si concentration further the magnetic ground state continuously transforms into that of CePt_3Si. In essence, we argue that CePt_3B can be understood as a low pressure variant of CePt_3Si.
机译:我们对CePt_3B_(1-x)Si_x(一种在非中心对称晶格中结晶的合金系统)的主要体积性质(磁化率,磁化强度,电阻率和比热)进行了研究,并得出了磁相图。以前已经研究了合金系列终点的材料,其中CePt-3B被确立为在低温下具有两种不同磁相的材料(低于TN = 7.8 K的反磁性,低于T_C≈5 K的弱铁磁性),而CePt_3Si是重铁蛋白超导体(T_c = 0.75 K)与反铁磁性(T_N = 2.2 K)共存。从我们的实验中我们得出结论,磁相图分为两个区域。在硅含量低的区域(最高x〜0.7),材料性能类似于CePt_3B。随着Si浓度的增加,磁性基态连续转变为CePt_3Si。从本质上讲,我们认为CePt_3B可以理解为CePt_3Si的低压变体。

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  • 来源
    《Physical review》 |2012年第24期|245104.1-245104.7|共7页
  • 作者单位

    Institute of Condensed Matter Physics, University of Technology Braunschweig, D-38106 Braunschweig, Germany;

    Institute of Condensed Matter Physics, University of Technology Braunschweig, D-38106 Braunschweig, Germany;

    Institute of Condensed Matter Physics, University of Technology Braunschweig, D-38106 Braunschweig, Germany,Wehrwissenschaftliches Institut fuer Werk und Betriebsstoffe WIWeB, D-85435 Erding, Germany;

    Berlin Neutron Scattering Center, Helmholtz Zentrum Berlin, D-14109 Berlin, Germany;

    Berlin Neutron Scattering Center, Helmholtz Zentrum Berlin, D-14109 Berlin, Germany;

    Stony Brook University, Department of Physics and Astronomy, New York, NY, USA;

    Stony Brook University, Department of Physics and Astronomy, New York, NY, USA,Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, New York, NY, USA;

    Institute of Solid State Physics, Vienna University of Technology, A-1090 Vienna, Austria;

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  • 正文语种 eng
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  • 关键词

    magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.); strongly correlated electron systems; heavy fermions; antiferromagnetics;

    机译:磁相边界(包括磁跃迁;超磁性等);强相关电子系统;重费米子反铁磁;

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