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2008 | 113 | 1 | 227-230
Article title

Magnetic Structure and Phase Diagram of TmB_4

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EN
Abstracts
EN
Magnetic structure of single crystalline TmB_4 has been studied by magnetization, magnetoresistivity, and specific heat measurements. A complex phase diagram with different antiferromagnetic phases was observed below T_{N1}=11.7 K. Besides the plateau at half-saturated magnetization (1/2 M_S), also plateaus at 1/9, 1/8 and 1/7 of M_S were observed as a function of applied magnetic field Bparallel c. From additional neutron scattering experiments on TmB_4, we suppose that these plateaus arise from a stripe structure which appears to be coherent domain boundaries between antiferromagnetic-ordered blocks of 7 or 9 lattice constants. The received results suggest that the frustration among the Tm^{3+} magnetic ions, which maps to a geometrically frustrated Shastry-Sutherland lattice, leads to a strong competition between antiferromagnetic and ferromagnetic order. Thus, stripe structures in intermediate field appear to be the best way to minimize the magnetostatic energy against other magnetic interactions among the Tm ions combined with very strong Ising anisotropy.
Keywords
EN
Contributors
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia
  • Hahn Meitner Institut, Glienicker Str. 100, 14109 Berlin, Germany
author
  • Hahn Meitner Institut, Glienicker Str. 100, 14109 Berlin, Germany
author
  • Institute for Problems of Materials Science, Ukrainian Academy of Sciences, Krzhyzhanovsky 3, 03680 Kiev, Ukraine
  • Institute for Problems of Materials Science, Ukrainian Academy of Sciences, Krzhyzhanovsky 3, 03680 Kiev, Ukraine
References
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  • 6. S. Yoshii, T. Yamamoto, M. Hagiwara, A. Shigekawa, S. Michimura, F. Iga, T. Takabatake, K. Kindo, J. Phys ., 51 (2059) 0 6
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n1055kz
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