Neutron scattering study on spin correlations and fluctuations in the transition-metal-based magnetic quasicrystal Zn-Fe-Sc

Taku J. Sato, Shiro Kashimoto, Chihiro Masuda, Takahiro Onimaru, Isao Nakanowatari, Kazuki Iida, Rei Morinaga, Tsutomu Ishimasa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Spin correlations and fluctuations in the 3d -transition-metal-based icosahedral quasicrystal Zn-Fe-Sc have been investigated by neutron scattering using polycrystalline samples. Magnetic diffuse scattering has been observed in the elastic experiment at low temperatures, indicating development of static short-range-spin correlations. In addition, the inelastic scattering experiment detects a Q -independent quasielastic signal ascribed to single-site relaxational spin fluctuations. Above the macroscopic freezing temperature Tf 7 K, the spin relaxation rate shows Arrhenius-type behavior, indicating thermally activated relaxation process. In contrast, the relaxation rate remains finite even at the lowest temperature, suggesting a certain quantum origin for the spin fluctuations below Tf.

Original languageEnglish
Article number014437
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number1
DOIs
Publication statusPublished - 2008 Jan 29
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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