Magnetic Phase Diagrams of Kondo Compounds Ce0.75La0.25B6 and Ce0.6La0.4B6

Osamu Suzuki, Terutaka Goto, Shintaro Nakamura, Takeshi Matsumura, Satoru Kunii

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95 Citations (Scopus)


We measured the elastic and thermal properties to examine the competing effect between the intersite interactions and the Kondo coupling in Ce0.75La0.25B6 and Ce0.6La0.4B6 with the ΓT8 ground state. The huge softening of the transverse C44 mode of both compounds at low temperatures indicates a remarkable fluctuation of the quadrupolar moments Oyz, Ozx and Oxy with Γ5 symmetry. In the magnetic phase diagram of Ce0.75La0.25B6, we found a new ordered phase IV in addition to the antiferroquadrupolar phase II and the antiferromagnetic phase III. The compound Ce0.6La0.4B6, however, shows the Fermi liquid state without the long-range order at low fields and transits into the ordered phase II or III in the magnetic field above 16kOe.

Original languageEnglish
Pages (from-to)4243-4250
Number of pages8
JournalJournal of the Physical Society of Japan
Issue number12
Publication statusPublished - 1998 Dec


  • CeLaB
  • CeLaB
  • Elastic constant
  • Kondo effect
  • Magnetic phase diagram
  • Quadrupolar ordering
  • Specific heat


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