| Unconventional exchange bias in oxide-coated manganese nanoparticles | |
| P. Z. Si; D. Li; J. W. Lee; C. J. Choi; Z. D. Zhang; D. Y. Geng; E. Bruck | |
| 2005 | |
| Source Publication | Applied Physics Letters
 |
| ISSN | 0003-6951 |
| Volume | 87Issue:13 |
| Abstract | We report unconventional exchange bias in oxide-coated manganese nanoparticles, in which the Curie temperature of Mn3O4 shell is lower than the Neel temperature of the antiferromagnetic core. The coercivity (873 kA/m) of the nanoparticles, which is more than four times greater than that of bulk Mn3O4, has been enhanced significantly. A considerable enhancement in Curie temperature compared to the bulk was also observed for Mn3O4 in nanoscale. An exchange bias field as large as 400 kA/m was observed due to the strong interfacial exchange coupling. A simple phenomenological model is given to understand these phenomena in this ferri/antiferromagnetic system. (C) 2005 American Institute of Physics. |
| description.department | chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. korea inst machinery & mat, chang won 641010, south korea. univ amsterdam, van der waals zeeman inst, nl-1018 xe amsterdam, netherlands.;si, pz (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;pzsi@mail.com |
| Keyword | Magnetic-properties Anisotropy |
| URL | 查看原文 |
| WOS ID | WOS:000232060200060 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/35033 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | P. Z. Si,D. Li,J. W. Lee,et al. Unconventional exchange bias in oxide-coated manganese nanoparticles[J]. Applied Physics Letters,2005,87(13). |
| APA | P. Z. Si.,D. Li.,J. W. Lee.,C. J. Choi.,Z. D. Zhang.,...&E. Bruck.(2005).Unconventional exchange bias in oxide-coated manganese nanoparticles.Applied Physics Letters,87(13). |
| MLA | P. Z. Si,et al."Unconventional exchange bias in oxide-coated manganese nanoparticles".Applied Physics Letters 87.13(2005). |
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