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

Title
Study of spin-ordering and spin-reorientation transitions in hexagonal manganites through Raman spectroscopy
Authors
Chen, Xiang-BaiNguyen Thi Minh HienHan, KiokNam, Ji-YeonNguyen Thi HuyenShin, Seong-IlWang, XueyunCheong, S. W.Lee, D.Noh, T. W.Sung, N. H.Cho, B. K.Yang, In-Sang
Ewha Authors
양인상
SCOPUS Author ID
양인상scopus
Issue Date
2015
Journal Title
SCIENTIFIC REPORTS
ISSN
2045-2322JCR Link
Citation
vol. 5
Publisher
NATURE PUBLISHING GROUP
Indexed
SCI; SCIE; SCOPUS WOS scopus
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 Mn3+ sublattices, while leaving out the strong effects of paramagnetic moments of the rare earth ions.
DOI
10.1038/srep13366
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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