Giant magnetic coercivity and ionic superlattice nano-domains in Fe 0.25TaS2

Y. J. Choi, S. B. Kim, T. Asada, S. Park, Weida Wu, Y. Horibe, S. W. Cheong

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We have explored giant magnetic coercivity (Hc≈7 tesla) in the highly anisotropic ferromagnet of Fe0.25TaS2 through harnessing order of Fe2+ ions intercalated in-between TaS2 layers. Fe ions order well in annealed crystals and form a (1/2,0,0) superlattice. However, a (1/3,1/3,0) superlattice, in addition to the (1/2,0,0) superlattice, can form in quenched crystals. These coexisting superlattices with nano-size domains result in significant change of magnetic domain configurations and huge enhancement of Hc, probably through efficient magnetic domain wall pinning by nano-size superlattice domains.

Original languageEnglish (US)
Article number37012
JournalEPL
Volume86
Issue number3
DOIs
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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