NMR investigation of quadrupole order parameter in actinide dioxides

Y. Tokunaga, Y. Homma, S. Kambe, D. Aoki, H. Sakai, H. Chudo, K. Ikushima, E. Yamamoto, A. Nakamura, Y. Shiokawa, R. E. Walstedt, H. Yasuoka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

17O-NMR have been performed to investigate the order parameters in actinide dioxides. In the antiferro-magnetic ordered state of UO2, magnetic dipole and electric quadrupole order parameters have been extracted individually through the microscopic hyperfine interactions with 17O nuclei. We have also detected the development of the quadrupole order parameter in the exotic multipolar ordering state of NpO2. The large value of the critical exponent suggests the secondary character of the quadrupole ordering in NpO2.

Original languageEnglish
Pages (from-to)1663-1665
Number of pages3
JournalJournal of Optoelectronics and Advanced Materials
Volume10
Issue number7
Publication statusPublished - 2008 Jul

Keywords

  • Critical exponent1 Introduction
  • NMR
  • NpO
  • UO

ASJC Scopus subject areas

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

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