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The concentration metamagnetic transition in Tm1−x TbxCo2 compounds

  • Magnetism and Ferroelectricity
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Abstract

The Tm1−x TbxCo2 (0 ≤ x ≤ 1) system was studied by measuring the magnetic susceptibility, electrical resistance, and neutron diffraction. In the compounds with 0 < x ≤ 0.15, an inhomogeneous magnetic state characterized by the existence of large regions (up to 100 Å in size) with short-range ferrimagnetic order was found to occur. The maximum of the residual electrical resistance observed in the compound with x = 0.1 at the magnetic ordering temperature was established to be due to the scattering of conduction electrons by localized spin fluctuations associated with f-d exchange fluctuations caused by the substitution of terbium for thulium. The increase in the terbium concentration to x ≥ 0.15 leads to a sharp increase in the Co sublattice magnetization and the establishment of a long-range ferromagnetic order, which indicates a concentration metamagnetic transition in the band subsystem.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoĭ 18, Yekaterinburg, 620219, Russia

    E. A. Sherstobitova, A. F. Gubkin, A. A. Ermakov, N. V. Baranov, Yu. A. Dorofeev & A. N. Pirogov

  2. Ural State University, pr. Lenina 51, Yekaterinburg, 620083, Russia

    A. F. Gubkin, A. A. Ermakov, A. V. Zakharov & N. V. Baranov

  3. Laboratory for Neutron Scattering, ETH Zürich & Paul Scherrer Institute, Villingen PSI, CH-5232, Switzerland

    A. A. Podlesnyak & V. Yu. Pomyakushin

Authors
  1. E. A. Sherstobitova
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  2. A. F. Gubkin
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  3. A. A. Ermakov
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  4. A. V. Zakharov
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  5. N. V. Baranov
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  6. Yu. A. Dorofeev
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  7. A. N. Pirogov
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  8. A. A. Podlesnyak
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  9. V. Yu. Pomyakushin
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Additional information

Original Russian Text © E.A. Sherstobitova, A.F. Gubkin, A.A. Ermakov, A.V. Zakharov, N.V. Baranov, Yu.A. Dorofeev, A.N. Pirogov, A.A. Podlesnyak, V.Yu. Pomyakushin, 2006, published in Fizika Tverdogo Tela, 2006, Vol. 48, No. 7, pp. 1249–1254.

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Sherstobitova, E.A., Gubkin, A.F., Ermakov, A.A. et al. The concentration metamagnetic transition in Tm1−x TbxCo2 compounds. Phys. Solid State 48, 1321–1327 (2006). https://doi.org/10.1134/S1063783406070171

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  • DOI: https://doi.org/10.1134/S1063783406070171

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