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dc.contributor.author양인상-
dc.date.accessioned2016-08-28T10:08:12Z-
dc.date.available2016-08-28T10:08:12Z-
dc.date.issued2012-
dc.identifier.issn0377-0486-
dc.identifier.otherOAK-9569-
dc.identifier.urihttp://dspace.ewha.ac.kr/handle/2015.oak/223277-
dc.description.abstractWe present the results of polarized Raman spectroscopy of hexagonal BaFe12O19 single crystal. The spectra, recorded from 200 to 800 cm-1 and 1100 to 1700 cm-1 in the 20-250 K temperature range, are analyzed on the basis of both crystal vibrations and spin-waves. In the low wavenumber range, the Γ-point phonons are observed. In the high wavenumber range, phonon mixings are observed; more interestingly, four modes of spin-waves are identified in hexagonal BaFe12O 19. Both have not been studied previously. Our analyses of the spin-waves provide an optical method for quantitatively estimating the spin exchange interactions in hexagonal BaFe12O19. The four strong exchange integrals are found to have the values of Jce = 1.31 meV, Jae = 1.36 meV, Jcd = 1.46 meV, and Jbd = 1.71 meV. Our results also indicate that at ~200 and ~80 K, there would be additional spin-ordering transitions in hexagonal BaFe12O 19. Copyright © 2012 John Wiley & Sons, Ltd.-
dc.languageEnglish-
dc.titleRaman scattering studies of spin-waves in hexagonal BaFe12O 19-
dc.typeArticle-
dc.relation.issue12-
dc.relation.volume43-
dc.relation.indexSCIE-
dc.relation.indexSCOPUS-
dc.relation.startpage2020-
dc.relation.lastpage2024-
dc.relation.journaltitleJournal of Raman Spectroscopy-
dc.identifier.doi10.1002/jrs.4100-
dc.identifier.wosidWOS:000312531400024-
dc.identifier.scopusid2-s2.0-84871213321-
dc.author.googleHien N.T.M.-
dc.author.googleHan K.-
dc.author.googleChen X.-B.-
dc.author.googleSur J.C.-
dc.author.googleYang I.-S.-
dc.contributor.scopusid양인상(7101797839)-
dc.date.modifydate20170518143938-
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자연과학대학 > 물리학전공 > Journal papers
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