Advertisement

Journal of the Korean Physical Society

, Volume 62, Issue 12, pp 2146–2149 | Cite as

Mössbauer spectroscopy of Fe-doped valence-fluctuating α-YbAlB4

  • Yui Sakaguchi
  • Shugo Ikeda
  • Hisao Kobayashi
  • Kentaro Kuga
  • Keita Sone
  • Satoru Nakatsuji
Article

Abstract

The magnetic properties of high-quality ∼25 at.% Fe doped α-YbAlB4 with an orthorhombic Pbam structure were investigated by using magnetization measurements and 57Fe Mössbauer spectroscopy. The temperature dependence of the magnetization along the a-axis showed anomalies at T N2 ∼ 7.7 K and T N1 ∼ 10.4 K. Broadenings of the peaks in the Mössbauer spectrum were observed at temperatures below 6 K, which were due to the magnetic hyperfine fields transferred from the Yb magnetic moments. The evaluated transferred magnetic hyperfine field almost disappears around T N2. The anomalous temperature dependence of the transferred magnetic hyperfine field reveals that the magnetic structure and the ordered magnetic moments of the Yb ions show complex temperature dependences at temperatures below T N1.

Keywords

YbAlB4 Valence fluctuation Mössbauer spectroscopy 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Z. Fisk, K. N. Yang, M. B. Maple and H. R. Ott, Valence Fluctuations in Solids (North-Holland, New York, 1981), p. 345.Google Scholar
  2. [2]
    R. T. Macaluso, S. Nakatsuji, K. Kuga, E. L. Thomas, Y. Machida, Y. Maeno, Z. Fisk and J. Y. Chan, Chem. Mater. 19, 1918 (2007).CrossRefGoogle Scholar
  3. [3]
    S. Nakatsuji, K. Kuga, Y. Machida, T. Tayama, T. Sakakibara, Y. Karaki, H. Ishimoto, S. Yonezawa, Y. Maeno, E. Pearson, G. G. Lonzarich, L. Balicas, H. Lee and Z. Fisk, Nature Phys. 4, 603 (2008).ADSCrossRefGoogle Scholar
  4. [4]
    K. Kuga, Y. Karaki, Y. Matsumoto, Y. Machida and S. Nakatsuji, Phys. Rev. Lett. 101, 137004 (2008).ADSCrossRefGoogle Scholar
  5. [5]
    Y. Matsumoto, S. Nakatsuji, K. Kuga, Y. Karaki, N. Horie, Y. Shimura, T. Sakakibara, A. H. Nevidomskyy and P. Coleman, Science 331, 316 (2011).ADSCrossRefGoogle Scholar
  6. [6]
    M. Okawa, et al., Phys. Rev. Lett. 104, 247201 (2010).ADSCrossRefGoogle Scholar
  7. [7]
    Y. Matsumoto, K. Kuga, N. Horie and S. Nakatsuji, J. Phys.: Conf. Ser. 273, 012006 (2011).ADSCrossRefGoogle Scholar
  8. [8]
    Y. Matsumoto, K. Kuga, T. Tomita, Y. karaki and S. Nakatsuji, Phys. Rev. B. 84, 125126 (2011).ADSCrossRefGoogle Scholar
  9. [9]
    E. Thomas and J. Y. Chan, private communication.Google Scholar
  10. [10]
    K. Kuga and S. Nakatsuji, private communication.Google Scholar

Copyright information

© The Korean Physical Society 2013

Authors and Affiliations

  • Yui Sakaguchi
    • 1
  • Shugo Ikeda
    • 1
  • Hisao Kobayashi
    • 1
  • Kentaro Kuga
    • 2
  • Keita Sone
    • 2
  • Satoru Nakatsuji
    • 2
  1. 1.Center for Novel Material Science under Multi-extreme Conditions, Graduate School of Material ScienceUniversity of HyogoHyogoJapan
  2. 2.Institute for Solid State PhysicsUniversity of TokyoKashiwaJapan

Personalised recommendations