Magnetic ground-state properties of noncentrosymmetric CePt₃B₁₋ₓSiₓ

Abstract

We present a study of the alloying series of the noncentrosymmetric f-electron intermetallic CePt3B1−xSix by means of muon spin rotation and relaxation measurements. In addition, we include a high-pressure magnetization investigation of the stoichiometric parent compound CePt3B. From our data we establish the nature of the magnetic ground state properties of the series, derive the ordered magnetic moment as function of stoichiometry, and gain insight into the evolution of the symmetry of the ordered magnetic state with x. We thus can verify the notion that the behavior of the sample series can essentially be understood within the framework of the Doniach phase diagram. Further, our findings raise the issue of the role the Dzyaloshinskii-Moriya magnetic interaction plays in correlated electron materials and its effect on magnetic fluctuations in such materials.