Magnetic Order-Order Transition in Tetragonal ErB2C2

Kenji Ohoyama, Kentaro Indoh, Aya Tobo, Hideya Onodera, Yasuo Yamaguchi

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


We have investigated magnetic properties of ErB2C2 which is an isostructural compound of the antiferroquadrupolar ordering materials, DyB2C2 and HoB2C2, by magnetisation and neutron diffraction measurements. ErB2C 2 shows magnetic transitions at TN = 15.9K and T t = 13.0K. The magnetic structure of the ground state is a simple Ising-type antiferromagnetic one with a propagation vector of k = (1, 0, 0). The intermediate phase between TN and Tt under zero magnetic field is a long range magnetic ordered state with a transverse sinusoidal modulation with a propagation vector of (1 + δ, δ, δ, 0), where δ = 0.1120(2) which is nearly the same as that in phase IV in HoB2C2.

Original languageEnglish
Pages (from-to)1746-1751
Number of pages6
Journaljournal of the physical society of japan
Issue number7
Publication statusPublished - 2002 Jul


  • ErBC
  • HoBC
  • Long periodic magnetic structure
  • Neutron powder diffraction
  • Order-order transition
  • Phase diagram
  • Quadrupolar ordering

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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