Magnetic ordering in the pyrochlore Ho2CrSbO7 determined from neutron diffraction, and the magnetic properties of other RE2CrSbO7 phases (RE=Y, Tb, Dy, Er)

Mariana J. Whitaker, Colin Greaves

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Abstract

The magnetic structure of the pyrochlore Ho2CrSbO7, which orders magnetically below 13 K, has been studied using neutron powder diffraction. Ho2CrSbO7 is found to form an “ordered spin-ice structure” where the magnetic moments are constrained along the 111 axes, but with a ferromagnetic moment in one direction. The Cr3+ ions order ferromagnetically and this is thought to lift the degeneracy of the x, y and z directions in the cubic structure causing the ferromagnetic component from the Ho3+ ions to align. The pyrochlores RE2CrSbO7 where RE=Y, Tb, Dy and Er have also been prepared and studied using SQUID magnetometry.

Original languageEnglish
Pages (from-to)171-175
JournalJournal of Solid State Chemistry
Volume215
Early online date8 Apr 2014
DOIs
Publication statusPublished - 1 Jul 2014

Keywords

  • Pyrochlore
  • Neutron diffraction
  • Magnetic structure
  • Spin-ice
  • Holmium

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