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dc.contributor.authorYang, Chao-Yaoen_US
dc.contributor.authorHuang, Chun-Chaoen_US
dc.contributor.authorTseng, Yuan-Chiehen_US
dc.contributor.authorLiu, Chien-Minen_US
dc.contributor.authorChen, Chihen_US
dc.contributor.authorLin, Hong-Jien_US
dc.date.accessioned2014-12-08T15:20:48Z-
dc.date.available2014-12-08T15:20:48Z-
dc.date.issued2011-10-01en_US
dc.identifier.issn0021-8979en_US
dc.identifier.urihttp://dx.doi.org/10.1063/1.3647753en_US
dc.identifier.urihttp://hdl.handle.net/11536/14785-
dc.description.abstractA superparamagnetic (SM) to ferromagnetic (FM) phase transition was investigated in Co-doped (similar to 6%) electroless plated Ni arrays. The introduction of Co altered the microstructure of the Ni arrays from nanocrystalline to polycrystalline, resulting in a SM -> FM transition. This Co-induced magnetic phase transition is similar to that observed after heat treatment of undoped samples [C. M. Liu, Y. C. Tseng, C. Chen, M. C. Hsu, T. Y. Chao, and Y. T. Cheng, Nanotechnology 20, 415703 (2009); C. C. Huang, C. C. Lo, Y. C. Tseng, C. M. Liu, and C. Chen, J. Appl. Phys. 109, 113905 (2011)]. The role of Co dopant was identified electronically using x-ray magnetic spectroscopy, revealing that the transition modified the Ni host's electronic structure and enhanced its moment by effectively spin-polarizing the Ni 3d conduction band. This was distinctly different than in the heat treatment case, which underwent an electronically independent phase transition. The element-specific magnetic hysteresis of Co and Ni was also probed, which showed that the two elements were magnetically coupled. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3647753]en_US
dc.language.isoen_USen_US
dc.titleCoupled microstructural and magnetic transition in Co-doped Ni nano-arraysen_US
dc.typeArticleen_US
dc.identifier.doi10.1063/1.3647753en_US
dc.identifier.journalJOURNAL OF APPLIED PHYSICSen_US
dc.citation.volume110en_US
dc.citation.issue7en_US
dc.citation.epageen_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.identifier.wosnumberWOS:000295883000074-
dc.citation.woscount3-
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