Order in the Heisenberg pyrochlore: The magnetic structure of Gd2Ti2O7

Champion, J.D.M., Wills, A.S., Fennell, T., Bramwell, S.T., Gardner, J.S., Green, M.A. (2001) Order in the Heisenberg pyrochlore: The magnetic structure of Gd2Ti2O7. Physical Review B - Condensed Matter and Materials Physics, 64 (14). pp. 1404071-1404074. ISSN 0163-1829. (doi:140407) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/140407

Abstract

The rare-earth pyrochlore material Gd2Ti2O7 is considered to be an ideal model frustrated Heisenberg antiferromagnet with additional dipolar interactions. For this system there are several untested theoretical predictions of the ground state ordering pattern. Here we establish the magnetic structure of isotopically enriched 160Gd2Ti2O7, using powder neutron diffraction at a temperature of 50 mK. The magnetic structure at this temperature is a partially ordered, noncollinear antiferromagnetic structure, with propagation vector k = 1/2 1/2 1/2. It can be described as a set of "q=0" ordered kagomé planes separated by zero interstitial moments. This magnetic structure agrees with theory only in part, leaving an interesting problem for future research.

Item Type: Article
DOI/Identification number: 140407
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Phys. Rev. B Condens. Matter Mater. Phys. [Field not mapped to EPrints] AD - Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: ferromagnetic material, gadolinium, pyrochlore, titanium, unclassified drug, anisotropy, article, crystal structure, magnetic field, molecular interaction, phase transition, quantum mechanics, structure analysis
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 14:31 UTC
Last Modified: 29 May 2019 16:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51143 (The current URI for this page, for reference purposes)
  • Depositors only (login required):