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Study of spin-ordering and spin-reorientation transitions in hexagonal manganites through Raman spectroscopy

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Title
Study of spin-ordering and spin-reorientation transitions in hexagonal manganites through Raman spectroscopy
Author(s)
Chen X.-B.; Hien N.T.M.; Han K.; Nam J.-Y.; Huyen N.T.; Shin S.-I.; Wang X.; Cheong S.W.; Daesoo Lee; Taewon Noh; Sung N.H.; Cho B.K.; Yang I.-S.
Publication Date
2015-08
Journal
SCIENTIFIC REPORTS, v.5, pp.13366
Publisher
NATURE PUBLISHING GROUP
Abstract
Spin-wave (magnon) scattering, when clearly observed by Raman spectroscopy, can be simple and powerful for studying magnetic phase transitions. In this paper, we present how to observe magnon scattering clearly by Raman spectroscopy, then apply the Raman method to study spin-ordering and spin-reorientation transitions of hexagonal manganite single crystal and thin films and compare directly with the results of magnetization measurements. Our results show that by choosing strong resonance condition and appropriate polarization configuration, magnon scattering can be clearly observed, and the temperature dependence of magnon scattering can be simple and powerful quantity for investigating spin-ordering as well as spin-reorientation transitions. Especially, the Raman method would be very helpful for investigating the weak spin-reorientation transitions by selectively probing the magnons in the Mn 3+ sublattices, while leaving out the strong effects of paramagnetic moments of the rare earth ions
URI
https://pr.ibs.re.kr/handle/8788114/1929
DOI
10.1038/srep13366
ISSN
2045-2322
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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