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Spin-flop transition in Gd5Ge4 observed by x-ray resonant magnetic scattering and first-principles calculations of magnetic anisotropy
Physical Review B
  • L. Tan, Iowa State University
  • Andreas Kreyssig, Iowa State University
  • Shibabrata Nandi, Iowa State University
  • S. Jia, Iowa State University
  • Yongbin Lee, Iowa State University
  • J. C. Lang, Argonne National Laboratory
  • Z. Islam, Argonne National Laboratory
  • Thomas A. Lograsso, Iowa State University
  • Deborah L. Schlagel, Iowa State University
  • Vitalij K. Pecharsky, Iowa State University
  • Karl A. Gschneidner, Jr., Iowa State University
  • Paul C. Canfield, Iowa State University
  • Bruce N. Harmon, Iowa State University
  • Robert J. McQueeney, Iowa State University
  • Alan I. Goldman, Iowa State University
Document Type
Article
Publication Date
2-21-2008
DOI
10.1103/PhysRevB.77.064425
Abstract
X-ray resonant magnetic scattering was employed to study a fully reversible spin-flop transition in orthorhombic Gd5Ge4 and to elucidate details of the magnetic structure in the spin-flop phase. The orientation of the moments at the three Gd sites flop 90° from the c axis to the a axis when a magnetic field, Hsf=9 kOe, is applied along the c axis at T=9 K. The magnetic space group changes from Pnm′a to Pn′m′a′ for all three Gd sublattices. The magnetic anisotropy energy determined from experimental measurements is in good agreement with the calculations of the magnetic anisotropy based on the spin-orbit coupling of the conduction electrons and an estimation of the dipolar interactions anisotropy. No significant magnetostriction effects were observed at the spin-flop transition.
Comments

This article is from Physical Review B 77 (2008): 064425, doi:10.1103/PhysRevB.77.064425.

Copyright Owner
American Physical Society
Language
en
File Format
application/pdf
Citation Information
L. Tan, Andreas Kreyssig, Shibabrata Nandi, S. Jia, et al.. "Spin-flop transition in Gd5Ge4 observed by x-ray resonant magnetic scattering and first-principles calculations of magnetic anisotropy" Physical Review B Vol. 77 Iss. 6 (2008) p. 064425
Available at: http://works.bepress.com/paul_canfield/17/