Evidence for breakdown of ferromagnetic order below (formula presented) in the manganite (formula presented)

Vladimir Chechersky, Amar Nath, I. Isaac, J. Franck, Kartik Ghosh, Honglyoul Ju, R. Greene

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

We report an emission Mössbauer study of the ferromagnetic metal (Formula presented) where a few parts-per-million of Mn are replaced by (Formula presented) The behavior observed is dramatically different than that for a conventional ferromagnet. The data give strong evidence for an anomalous gradual crumbling of the ferromagnetic order, and the formation of spin clusters below as well as above the Curie temperature (Formula presented) Application of a magnetic field, even well above (Formula presented) results in a dramatic coalescence of small spin clusters into larger clusters with more ordered spins. The cluster size is found to be strongly dependent on the magnitude of the applied field.

Original languageEnglish
Pages (from-to)497-502
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume59
Issue number1
DOIs
Publication statusPublished - 1999 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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