TY - JOUR
T1 - Giant magnetic coercivity and ionic superlattice nano-domains in Fe 0.25TaS2
AU - Choi, Y. J.
AU - Kim, S. B.
AU - Asada, T.
AU - Park, S.
AU - Wu, Weida
AU - Horibe, Y.
AU - Cheong, S. W.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79051469820&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79051469820&partnerID=8YFLogxK
U2 - 10.1209/0295-5075/86/37012
DO - 10.1209/0295-5075/86/37012
M3 - Article
AN - SCOPUS:79051469820
VL - 86
JO - Europhysics Letters
JF - Europhysics Letters
SN - 0295-5075
IS - 3
M1 - 37012
ER -