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Temperature-dependent studies of the geometrically frustrated pyrochlores Ho2Ti2O7 and Dy2Ti2O7
http://hdl.handle.net/10228/00006145
http://hdl.handle.net/10228/000061451e71280d-6f31-4ee4-80da-7d899122246c
名前 / ファイル | ライセンス | アクション |
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PRB79_214437.pdf (1.3 MB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||
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公開日 | 2017-04-13 | |||||||||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
資源タイプ | journal article | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Temperature-dependent studies of the geometrically frustrated pyrochlores Ho2Ti2O7 and Dy2Ti2O7 | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Mączka, M.
× Mączka, M.× Sanjuán, M. L.× Fuentes, A. F.× Macalik, L.× Hanuza, J.× 松平, 和之
WEKO
20843
× Hiroi, Z. |
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抄録 | ||||||||||||
内容記述タイプ | Abstract | |||||||||||
内容記述 | A temperature-dependent Raman study of Ho2Ti2O7 and Dy2Ti2O7 single crystals was performed in the 5–873 K temperature range. Polarized spectra allowed us to establish the symmetries of the observed bands and revise the mode assignment made in previous works. Our studies revealed also two additional bands near 287 and 300 cm−1 for Dy2Ti2O7, which can be assigned to crystal field transitions in Dy3+ ions. Temperature dependent Raman studies showed large increase of linewidths. These changes have been analyzed in terms of strong third-order phonon-phonon anharmonic interactions. The Raman spectra also showed anomalous softening of the majority of phonon modes upon cooling in the whole temperature range studied. In contrast to this behavior, the F2g 310 cm−1 and Eg 330 cm−1 phonon modes showed hardening upon cooling down to about 100–120 K and then anomalous softening below this temperature. This anomalous behavior of phonon wave numbers has been attributed to the increase in octahedral distortion upon cooling. | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : Physical review. Third series. B, Condensed matter and materials physics 巻 79, 号 21, p. 214437-1-214437-13, 発行日 2009-06-30 |
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出版者 | Published by the American Physical Society through the American Institute of Physics | |||||||||||
DOI | ||||||||||||
関連タイプ | isIdenticalTo | |||||||||||
識別子タイプ | DOI | |||||||||||
関連識別子 | https://doi.org/10.1103/PhysRevB.79.214437 | |||||||||||
CRID | ||||||||||||
関連タイプ | isIdenticalTo | |||||||||||
識別子タイプ | URI | |||||||||||
関連識別子 | https://cir.nii.ac.jp/crid/1050282813887688448 | |||||||||||
日本十進分類法 | ||||||||||||
主題Scheme | NDC | |||||||||||
主題 | 431 | |||||||||||
NCID | ||||||||||||
収録物識別子タイプ | NCID | |||||||||||
収録物識別子 | AA11187113 | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | EISSN | |||||||||||
収録物識別子 | 2469-9969 | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | PISSN | |||||||||||
収録物識別子 | 1098-0121 | |||||||||||
著作権関連情報 | ||||||||||||
権利情報 | American Physical Society | |||||||||||
出版タイプ | ||||||||||||
出版タイプ | VoR | |||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
査読の有無 | ||||||||||||
値 | yes | |||||||||||
連携ID | ||||||||||||
970 |