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Giant magnetic coercivity and ionic superlattice nano-domains in Fe0.25TaS2
- Authors
- Choi, Y. J.; Kim, S. B.; Asada, T.; Park, S.; Wu, Weida; Horibe, Y.; Cheong, S-W.
- Issue Date
- May-2009
- Publisher
- EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
- Citation
- EPL, v.86, no.3
- Journal Title
- EPL
- Volume
- 86
- Number
- 3
- ISSN
- 0295-5075
- Abstract
- We have explored giant magnetic coercivity (H-c approximate to 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 H-c, probably through efficient magnetic domain wall pinning by nano-size superlattice domains. Copyright (C) EPLA, 2009
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