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

研究成果: Article査読

3 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号014437
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
77
1
DOI
出版ステータスPublished - 2008 1 29
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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