The magnetic structures of some Fe100-xZrx metallic glasses

A. R. Wildes, J. R. Stewart, N. Cowlam, S. Al-Heniti, L. F. Kiss, T. Kemény

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The spin-flip cross-sections of two samples each of Fe90Zr10 and Fe92Zr8 produced in two different laboratories were measured using the polarized neutron spectrometers IN20 and D7 at the Institut Laue-Langevin, Grenoble. All the samples have non-zero spin-flip cross-sections, with peaks at Q ∼ 3.1 Å-1, coinciding with the first maximum in the structure factor S(Q), on a diffuse Q-dependent 'background'. The features change little on cooling to 2 K and persist above the Curie temperature. The samples are therefore all non-collinear ferromagnets, with significant ferromagnetic correlations between the non-collinear components of the moments. The compositions of the samples were shown to be correct to ≤0.1 at.% by magnetic susceptibility measurements. The 'background' was found to be significantly larger in the spin-flip cross-sections of one set of the samples. Careful examination of neutron diffraction data measured using the LAD diffractometer, Rutherford Appleton Laboratory, showed that these samples had barely detectable impurities of α-Fe. The critical re-evaluation of previous data is therefore necessary as experimental results are evidently influenced by very low levels of crystalline impurities that are difficult to detect.

Original languageEnglish
Pages (from-to)675-691
Number of pages17
JournalJournal of Physics Condensed Matter
Volume15
Issue number4
DOIs
Publication statusPublished - Feb 5 2003

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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