Antiferro-quadrupole ordering of CexLa1-xB 6 under high magnetic fields

Mitsuhiro Akatsu, Osamu Suzuki, Yuichi Nemoto, Terutaka Goto, Shintaro Nakamura, Satoru Kunii, Giyuu Kido

Research output: Contribution to journalArticlepeer-review


We have investigated the magnetic phase diagrams for antiferro-quadrupole (AFQ) phase II in CexLa1-xB6 by ultrasonic measurements under high magnetic fields up to 30 T by using the hybrid-magnet (Gama) at National Institute for Materials Science in Tsukuba. Ce0.50La0.50B6 reveals that the AFQ phase boundary in applied magnetic fields along the [0 0 1] direction closes at about 29 T and the boundaries in fields along the [1 1 0] and [1 1 1] directions are still open even at 30 T. The AFQ phase transition temperature in Ce0.75La0.25B6 shows maximum at about 25 T in H∥[001]. These experimental results support the idea that the multipole RKKY-type inter-site interaction of the quadrupoles Oyz,Ozx, Oxy and the field-induced octupole Txyz play an important role in the highly anisotropic magnetic phase diagram of phase II of CexLa1-xB6 in high magnetic fields.

Original languageEnglish
Pages (from-to)962-964
Number of pages3
JournalPhysica B: Condensed Matter
Issue numberSPEC. ISS.
Publication statusPublished - 2005 Apr 30


  • High magnetic field
  • Quadrupole ordering
  • Ultrasonic measurements

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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