Ferroquadrupolar ordering in PrTi 2Al 20

Taku J. Sato*, Soshi Ibuka, Yusuke Nambu, Teruo Yamazaki, Tao Hong, Akito Sakai, Satoru Nakatsuji

*この研究の対応する著者

研究成果: Article査読

70 被引用数 (Scopus)

抄録

The origin of the nonmagnetic phase transition in PrTi 2Al 20, reported earlier in a macroscopic study, has been asserted microscopically using elastic and inelastic neutron scattering techniques. It has been shown spectroscopically that the crystalline-electric-field ground state is a nonmagnetic Γ 3 doublet, whereas the excited states are two triplets (Γ 4 and Γ 5) and a singlet (Γ 1). The diffraction experiment under external magnetic field shows that the nonmagnetic transition is indeed ferroquadrupolar ordering, which takes place as a consequence of cooperative removal of the ground-state-doublet degeneracy. It is therefore concluded that PrTi 2Al 20 is another rare example of Pr compounds exhibiting nonmagnetic quadrupolar order.

本文言語English
論文番号184419
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
86
18
DOI
出版ステータスPublished - 2012 11月 16
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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