Journal of Materials Science: Materials in Electronics

, Volume 29, Issue 18, pp 15411–15415 | Cite as

Evolution of magnetic structure of Dy(CoxNi1−x)2B2C

  • A. Jiménez-Vázquez
  • R. Falconi
  • H. Takeya
  • B. Ouladdiaf
  • M. ElMassalami


DyNi\(_{2}\)B\(_{2}\)C superconducts at \(T_{c} \approx 6\,{\text{K}}\) and orders antiferromagnetically at \(T_{N}\approx 10\,{\text{K}}.\) Its non-superconducting isomorph DyCo\(_{2}\)B\(_{2}\)C is a ferromagnet with \(T_{C}\approx 6\,{\text{K}}.\) With the aim of mapping out the magnetic properties, in particular magnetic structures, of their solid solutions, we synthesized \(^{11}\)B-enriched Dy(Co\(_{x}\)Ni\(_{1-x}\))\(_{2}\)B\(_{2}\)C (\(x=0.2,0.4,0.6,0.8\)). We investigated the evolution of their magnetic, thermal and transport properties by means of the magnetization, resistivity, specific heat and neutron diffraction techniques. Their crystal structures were confirmed to be ThCr\(_{2}\)-Si\(_{2}\)-type tetragonal (I4/mmm) phase. The magnetic structure was found to be antiferromagnetic with k0.2 = (0, 0, 1) for x = 0.2; helicoidal with k\(_{0.4}\) = (0, 0, 0.49) and k\(_{0.6}\) = (0, 0, 0.46) for, respectively, x = 0.4 and 0.6 and ferromagnetic with k\(_{0.8}\) = (0, 0, 0) for x = 0.8. We discuss the evolution of such magnetic modes assuming a scenario of an idealized one-dimensional chain of transverse magnetic moments.



Partial financial support from the Brazilian Agency CNPq and the Mexican agency CONACyT are gratefully acknowledged.


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Authors and Affiliations

  1. 1.Instituto de FísicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
  2. 2.División Académica de Ciencias BásicasUniversidad Juárez Autónoma de TabascoCunduacánMexico
  3. 3.National Institute for Materials ScienceTsukubaJapan
  4. 4.Institut Laue-LangevinGrenoble Cedex 9France

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