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Ferro I phase and gadolinium
Physical Review B (2009)
  • J. F. Collingwood, Keele University
  • S. B. Palmer, University of Warwick
  • M. R. Lees, University of Warwick
  • C. Edwards, NDT Consultants
  • J. A. Santos, Universidade do Porto
  • J. B. Sousa, Universidade do Porto
  • David C. Jiles, Cardiff University
Certain Gd alloys, such as Gd-Y, are known to exhibit an apparent “double ferromagnetism” in which the c axis component orders on cooling from the paramagnetic phase (TC1), while the basal-plane component remains effectively paramagnetic. Subsequently the basal-plane component orders at a lower temperature (TC2). Our measurements of low-field ac susceptibility and magnetization for high-quality Gd and Gd-Y single crystals suggest that either the behavior originally used to identify ferro I, namely, the concave-upward growth of the a axis moment in the approach on cooling to TSR, is not necessarily an indicator of the phase, or that ferro I is also present in pure Gd. Of the several models that exist to describe ferro I, the results from this study favor the random-cone model.
Publication Date
March, 2009
Publisher Statement
This is an article from Physical Review B 79 (2009):104401, doi: 10.1103/PhysRevB.79.104401. Posted with permission.
Citation Information
J. F. Collingwood, S. B. Palmer, M. R. Lees, C. Edwards, et al.. "Ferro I phase and gadolinium" Physical Review B Vol. 79 (2009) p. 104401-1 - 104401-7
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