Giant magnetic coercivity and ionic superlattice nano-domains in Fe0.25TaS2

被引：32

作者：

Choi, Y. J. ^{[1
,2
]}

Kim, S. B. ^{[3
,4
]}

Asada, T. ^{[5
]}

Park, S. ^{[1
,2
]}

Wu, Weida ^{[1
,2
]}

Horibe, Y. ^{[1
,2
]}

Cheong, S-W. ^{[1
,2
,3
,4
]}

机构：

[1] Rutgers Ctr Emergent Mat, Piscataway, NJ 08854 USA

[2] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[3] Pohang Univ Sci & Technol, Lab Pohang Emergent Mat, Pohang 790784, South Korea

[4] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea

[5] NISSAN ARC LTD, Res Dept, Yokosuka, Kanagawa 2370061, Japan

来源：

EPL | 2009年 / 86卷 / 03期

关键词：

MICROSCOPY; HARDNESS;

D O I：

10.1209/0295-5075/86/37012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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

引用

页数：5

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