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arXiv · 1210.6489

Magnetic phase diagram of CePt3B1-xSix

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

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.

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Daniela Rauch, Stefan Süllow, Matthias Bleckmann, Bastian Klemke, Klaus Kiefer, Moo Sung Kim, Meigan C. Aronson, Ernst Bauer. 2012-11-28. Magnetic phase diagram of CePt3B1-xSix. https://doi.org/10.1103/physrevb.86.245104

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