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

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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
Article number37012
JournalEPL
Volume86
Issue number3
DOIs
Publication statusPublished - 2009 Nov 27

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Choi, Y. J., Kim, S. B., Asada, T., Park, S., Wu, W., Horibe, Y., & Cheong, S. W. (2009). Giant magnetic coercivity and ionic superlattice nano-domains in Fe 0.25TaS2. EPL, 86(3), [37012]. https://doi.org/10.1209/0295-5075/86/37012