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Exchange bias behavior of monodisperse Fe 3 O 4 / g-Fe 2 O 3 core / shell nanoparticles
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hwang, Yosun Angappane, S. Park, Jun-Yong An, Kwangjin Hyeon, Taeghwan Park, Je-Geun |
| Copyright Year | 2012 |
| Abstract | We have carried out systematic studies on well-characterized monodisperse Fe3O4/g-Fe2O3 core/shell nanoparticles of 2e30 nm having a very narrow size distribution and possessing a uniquely mono-layer of surface g-Fe2O3. This unique core-shell structure, probably having a disordered magnetic surface state, leads us to three key observations of unusual magnetic properties: i) a very large magnetic exchange anisotropy reaching over 7 106 erg/cm3 for the smaller particles, ii) exchange bias behavior in the magnetization data of the core/shell Fe3O4/g-Fe2O3 nanoparticles, and iii) the temperature dependence of the coercive field following an unusual exponential behavior. 2011 Elsevier B.V. All rights reserved. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://matchemlab.com/NFUpload/nfupload_down.php?name=32+Current+App+Phy+Hwang-2012-Exchange+bias+behavi.pdf&tmp_name=20161219160022.1300.3.0.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
