Low Temperature Magnetic Properties of Ce₃Pd₂₀Si₆

Abstract

Magnetization of a single crystalline Ce 3 Pd 20 Si 6 was measured at low temperatures down to 90 mK in fields up to 11 T for the three principal directions [100], [110], and [111]. For all directions, two transitions were observed in the temperature variation of the magnetization MðTÞ at 0.2 T; a broad peak at 0.28 K associated with a phase-III transition, and an upward bending at $0:5 K due to a phase-II ordering from the paramagnetic state (phase-I). The latter critical temperature T I{II is found to be strongly enhanced in magnetic fields B, depending on the field direction, and T I{II ðBÞ becomes highly anisotropic. These results suggest that phase-II is an antiferroquadrupole state originated from a À 8 ground state. By contrast, no appreciable anisotropy is found in the phase-III state. At 90 mK, phase-III collapses by applying a field of $0:63 T for all directions. Above this field, the magnetization curve MðBÞ becomes strongly anisotropic. The magnetization value per Ce in the phase-I region at 90 mK is apparently smaller than the À 8 moment, indicating that either 8c or 4a site has a À 7 ground state.

Magnetism, superconductivity, and quantum criticality in the multisite cerium heavy-fermion compoundCe3PtIn11

“…Consequently, a variety of new and complex phenomena might be expected in these multi-site cerium compounds where the ground state is characterized by a coexistence of different electronic and magnetic states on microscopic scale. Such is well illustrated in cubic Ce 3 Pd 20 Si 6 where one Ce-site exhibits dipolar (T N ≈ 0.3 K) and the second site quadrupolar antiferromagnetic (AFM) order (T Q ≈ 0.5 K) [4][5][6]. The compound arouses special attention displaying pronounced non-Fermi liquid behavior and a field-induced QCP (T N → 0 for B c ≈ 0.9 T) of Kondo breakdown type which separates two different ordered phases [7].…”

Crystal Growth and Stoichiometry of Strongly Correlated Intermetallic Cerium Compounds

“…Therefore, in the paper the consideration of crystal growth is accompanied by the discussion of their physical properties. Physical property measurements on Ce 3 Pd 20 Si 6 single crystals grown by the floating zone technique have been reported earlier [Goto et al (2009), Prokofiev et al (2009), Mitamura et al (2010)]. In Ref.…”

Incommensurate short-range multipolar order parameter of phase II in Ce3Pd20Si6

“…Several Ce-based compounds, such as CeB 6 , Ce 3 Pd 20 Si 6 , and Ce 3 Pd 20 Ge 6 , are of particular interest as they display such standalone MPO phases [14][15][16]. Close inspection of the magnetic phase diagram for Ce 3 Pd 20 Si 6 [17][18][19], as schematically shown in Fig. 1, suggests that it shows remarkably similar behavior to that of CeB 6 , but with reduced temperature and field scales [14,20].…”