Neutron diffraction from HoNi2b2C

C. V. Tomy, L. J. Chang, D. McK. Paul, N. H. Andersen, M. Yethiraj

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22 Citations (Scopus)

Abstract

RENi2B2C (RE = rare-earth) are quaternary compounds which exhibit a considerable degree of interaction between their superconducting and magnetic properties. The Ho variant is found to become superconducting at Tc = 9 K, but anomalous behaviour is observed in the low-field magnetic properties at T < 7 K (increasing susceptibility with decreasing temperature); at temperatures less than 5.6 K more conventional behaviour is regained. Neutron diffraction measurements demonstrate that at low temperatures (T < 5 K) the magnetic order consists of ferromagnetic planes antiferromagnetically coupled up the c-axis with a Ho moment of 8.9 ± 0.2 μB canted at 15 ± 5° from the a-b plane. At high temperatures (5 K < T < 8.5 K) satellites, together with the principal Bragg reflections, are observed which correspond to a modulation of the magnetic order with a wavelength of ∼ 136 Å up the c-axis. In the intermediate temperature (5 K < T < 7 K) range further Bragg reflections become evident. An additional modulation along the a-axis becomes important in this temperature range.

Original languageEnglish
Pages (from-to)139-141
Number of pages3
JournalPhysica B: Physics of Condensed Matter
Volume213-214
Issue numberC
DOIs
Publication statusPublished - 1995 Aug 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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