Low temperature magnetic properties of some new high-pressure perovskite phases of iron II: Observation of novel slow paramagnetic relaxation in CaFe2Ti2O6 and CaFe3Ti4O12

W. M. Reiff, K. Leinenweber, J. Parise

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

Results of iron-57 Moessbauer spectroscopy and ac and dc susceptibility study of the double perovskite phases, CaFeTi2O6 (A) and CaFe3Ti4O12 (B) are presented. Both phases exhibit spectral broadening effects with decreasing temperature and incipient magnetic hyperfine splitting attributable to novel slow paramagnetic relaxation at the tetrahedral and square planar sites of (A) and the square planar sites of (B). The temperature dependence of magnetic moment for (A) corresponds to classical single ion zero field splitting, while that of (B) indicates antiferromagnetic exchange interactions. There is no evidence of cooperative long range magnetic order in these materials.

Original languageEnglish (US)
Pages (from-to)387-392
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume453
StatePublished - Jan 1 1997
Externally publishedYes
EventProceedings of the 1996 MRS Fall Symposium - Boston, MA, USA
Duration: Dec 2 1996Dec 6 1996

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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