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arXiv 1210.6489cond-mat.str-el
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CePt3B1-xSix的磁性phase diagram

Magnetic phase diagram of CePt3B1-xSix

Daniela Rauch, Stefan Süllow, Matthias Bleckmann, Bastian Klemke, Klaus Kiefer, Moo Sung Kim, Meigan C. Aronson, Ernst Bauer

摘要:

本文研究了非中心对称晶格的CePt_3B_(1-x)Si-x合金的主要体相性质(磁化率、磁化强度、电阻率和比热),并给出了磁相图。合金系终点材料的研究工作已经完成,CePt_3B在低温下具有两种不同的磁相(T_N = 7.8K以下为反铁磁相,T_C ~ 5 K以下为弱铁磁相),而CePt_3Si是重费米子超导体(T_C = 0.75K)和反铁磁相(T_N = 2.2K)共存。从实验中我们得出结论,磁相图分为两个区域。在低Si含量的区域(高达x ~ 0.7),材料性质类似于CePt 3B的那些。当Si浓度进一步增加时,磁性基态连续地转变为CePt 3Si的磁性。从本质上讲,我们认为CePt_3B可以理解为CePt_3Si的低压变体。

英文摘要:

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 T_N = 7.8 K, weakly ferromagnetic below T_C ~ 5 K), while CePt3Si 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 CePt3B. Upon increasing the Si concentration further the magnetic ground state continuously transforms into that of CePt3Si. In essence, we argue that CePt_3B can be understood as a low pressure variant of CePt3Si.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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