Elastic properties and magnetic phase diagrams of dense Kondo compound Ce0.75La0.25B6

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

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15 Citations (Scopus)

Abstract

We have investigated the elastic properties of the cubic dense Kondo compound Ce0.75La0.25B6 by means of ultrasonic measurements. We have obtained magnetic fields vs temperatures (H-T) phase diagrams under magnetic fields along the crystallographic [001], [110] and [111] axes. An ordered phase IV showing the elastic softening of c44 locates in low temperature region between 1.6 and 1.1K below 0.7 T in all field directions. The phase IV shows an isotropic nature with regard to the field directions, while the antiferro-magnetic phase III shows an anisotropic character. A remarkable softening of c44 and a spontaneous trigonal distortion εyz + εzx + εxy recently reported by Akatsu et al. [J. Phys. Soc. Jpn. 72 (2003) 205] in the phase IV favor a ferro-quadrupole (FQ) moment of Oyz + Ozx + Oxy induced by an octupole ordering.

Original languageEnglish
Pages (from-to)735-741
Number of pages7
Journaljournal of the physical society of japan
Volume74
Issue number2
DOIs
Publication statusPublished - 2005 Feb

Keywords

  • CeLaB
  • Dense Kondo effect
  • Elastic constant
  • Magnetic phase diagram
  • Octupolar ordering
  • Quadrupolar ordering
  • Ultrasonic measurement

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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