Rauch, D., Süllow, S., Bleckmann, M., Klemke, B., Kiefer, K., Kim, M. S., Aronson, M. C., & Bauer, E. (2012). Magnetic phase diagram of CePt₃B₁₋ₓSiₓ. Physical Review B, 86(24), Article 245104. https://doi.org/10.1103/PhysRevB.86.245104
E138-03 - Forschungsbereich Functional and Magnetic Materials
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Zeitschrift:
Physical Review B
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ISSN:
2469-9950
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Datum (veröffentlicht):
15-Dez-2012
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Umfang:
7
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Verlag:
AMER PHYSICAL SOC
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Peer Reviewed:
Ja
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Keywords:
Condensed Matter Physics; Electronic, Optical and Magnetic Materials
en
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.
