DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choe, SB | ko |
dc.contributor.author | Shin, Sung-Chul | ko |
dc.date.accessioned | 2009-12-03T08:52:37Z | - |
dc.date.available | 2009-12-03T08:52:37Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2002 | - |
dc.identifier.citation | CURRENT APPLIED PHYSICS, v.2, pp.503 - 507 | - |
dc.identifier.issn | 1567-1739 | - |
dc.identifier.uri | http://hdl.handle.net/10203/14119 | - |
dc.description.abstract | We report domain reversal behavior in perpendicular ferromagnetic nanothin films investigated by means of a novel magneto-optical microscope magnetometer, capable of grabbing domain reversal patterns in real time under an applied field as well as simultaneous measurements of 8000 local hysteresis loops with 400-nm special resolution. Three contrasting domain reversal behaviors are found to exist: wall-motion dominant, dendritic-growth dominant, and nucleation dominant reversal. Quantitative analysis reveals that the contrasting reversal behavior is mainly caused by a sensitive change in wall-motion speed and that the reversal ratio of wall-motion speed over nucleation rate is a governing parameter for the contrasting domain reversal dynamics. The activation volumes of the wall-motion and nucleation processes are found generally unequal, and the inequality is closely related with the domain dynamics. The domain reversal pattern is truly coincident with submicron-scale local coercivity variation and local switching time of domain evolution is exponentially dependent on local coercivity governed by a thermal activation relaxation process. The observed domain reversal behavior could be well predicted by a Monte Carlo simulation of a micromagnetic model based on the uniaxial magnetic anisotropy of nanothin films. (C) 2002 Elsevier Science B.V. All rights reserved. | - |
dc.description.sponsorship | This work was supported by the Korean Ministry of Science and Technology through the Creative Research Initiative Project. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | ULTRATHIN FERROMAGNETIC-FILMS | - |
dc.subject | CO/PD MULTILAYERS | - |
dc.subject | ANISOTROPY | - |
dc.title | Domain reversal behavior in perpendicular magnetic nanothin films | - |
dc.type | Article | - |
dc.identifier.wosid | 000180081600012 | - |
dc.identifier.scopusid | 2-s2.0-0036891633 | - |
dc.type.rims | ART | - |
dc.citation.volume | 2 | - |
dc.citation.beginningpage | 503 | - |
dc.citation.endingpage | 507 | - |
dc.citation.publicationname | CURRENT APPLIED PHYSICS | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Shin, Sung-Chul | - |
dc.contributor.nonIdAuthor | Choe, SB | - |
dc.type.journalArticle | Article; Proceedings Paper | - |
dc.subject.keywordAuthor | domain dynamics | - |
dc.subject.keywordAuthor | activation volume | - |
dc.subject.keywordAuthor | local magnetic properties | - |
dc.subject.keywordAuthor | magnetic microscopes | - |
dc.subject.keywordAuthor | Co/Pd multilayer | - |
dc.subject.keywordPlus | ULTRATHIN FERROMAGNETIC-FILMS | - |
dc.subject.keywordPlus | CO/PD MULTILAYERS | - |
dc.subject.keywordPlus | ANISOTROPY | - |
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