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Monodispersed MnO nanoparticles with epitaxial Mn3O4 shells
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Berkowitz, A. E. | - |
dc.contributor.author | Rodriguez, G. F. | - |
dc.contributor.author | Hong, J. I. | - |
dc.contributor.author | An, K. | - |
dc.contributor.author | Hyeon, T. | - |
dc.contributor.author | Agarwal, N. | - |
dc.contributor.author | Smith, D. J. | - |
dc.contributor.author | Fullerton, E. E. | - |
dc.date.accessioned | 2020-04-27T13:24:02Z | - |
dc.date.available | 2020-04-27T13:24:02Z | - |
dc.date.created | 2020-03-20 | - |
dc.date.issued | 2008-07 | - |
dc.identifier.citation | Journal of Physics D: Applied Physics, Vol.41 No.13, p. 134007 | - |
dc.identifier.issn | 0022-3727 | - |
dc.identifier.other | 92939 | - |
dc.identifier.uri | https://hdl.handle.net/10371/165832 | - |
dc.description.abstract | We report the microstructural and magnetic properties of monodispersed nanoparticles ( NPs) of antiferromagnetic MnO ( T-N = 118 K), with epitaxial ferrimagnetic Mn3O4 ( T-C = 43 K) shells. Above T-C, an unusually large magnetization is present, produced by the uncompensated spins ( UCSs) on the surface of the MnO particles. These spins impart a net anisotropy to the MnO particles that is approximately three orders of magnitude larger than the bulk value. As a result, an anomalously high blocking temperature is exhibited by the MnO particles, and finite coercivity and exchange bias are present above T-C. When field cooled below T-C, a strong exchange bias was established in the Mn3O4 shells as a result of high net anisotropy of the MnO particles. A large coercivity was also observed. Models of several aspects of the behaviour of this unusual system emphasized the essential role of the UCSs on the surfaces of the MnO NPs. | - |
dc.language | 영어 | - |
dc.publisher | Institute of Physics Publishing | - |
dc.title | Monodispersed MnO nanoparticles with epitaxial Mn3O4 shells | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 현택환 | - |
dc.identifier.doi | 10.1088/0022-3727/41/13/134007 | - |
dc.citation.journaltitle | Journal of Physics D: Applied Physics | - |
dc.identifier.wosid | 000256928100015 | - |
dc.identifier.scopusid | 2-s2.0-48249096786 | - |
dc.citation.number | 13 | - |
dc.citation.startpage | 134007 | - |
dc.citation.volume | 41 | - |
dc.identifier.sci | 000256928100015 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Hyeon, T. | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | MAGNETIC-PROPERTIES | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
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