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Raman spectra show broad bands but\na peak near the 380 cm−1 increases its intensity with pressure. The linewidth of the band at 550 cm−1 also increases with pressure,\nwhile two of the Raman peaks merge above 6 GPa. Above 16 GPa, we observe additional splitting of the band at 50 cm−1. The\npressure evolution of the diffraction patterns for PIN shows obvious Bragg peaks splitting above 16 GPa; consistent with a\nsymmetry lowering transition. The transition at 0.5 GPa is identified as a pseudo-cubic to orthorhombic (Pbam) structural change\nwhereas the transition at 16 GPa is isostructure and associated with changes in linear compressibility and octahedral titling, and the\ntransition at 30 GPa is associated to an orthorhombic to monoclinic change. 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Structural transitions in Pb(In1∕2 Nb1∕2 )O3 under pressure
http://hdl.handle.net/2241/00138364
http://hdl.handle.net/2241/001383648971e5f4-38e6-4953-bc36-7b86ef0a712e
名前 / ファイル | ライセンス | アクション |
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JAD_5-4 (1.4 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2016-04-04 | |||||
タイトル | ||||||
タイトル | Structural transitions in Pb(In1∕2 Nb1∕2 )O3 under pressure | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Ahart, Muhtar
× Ahart, Muhtar× Somayazulu, Maddury× Kojima, Seiji× Yasuda, Naohiko× Prosandeev, Sergey× Hemley, Russell J. |
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著者別名 |
小島, 誠治
× 小島, 誠治 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Room-temperature Raman scattering and x-ray diffraction measurements together with first-principles calculations were employed to investigate the behavior of disordered Pb(In1=2Nb1=2ÞO3 (PIN) under pressure up to 50 GPa. Raman spectra show broad bands but a peak near the 380 cm−1 increases its intensity with pressure. The linewidth of the band at 550 cm−1 also increases with pressure, while two of the Raman peaks merge above 6 GPa. Above 16 GPa, we observe additional splitting of the band at 50 cm−1. The pressure evolution of the diffraction patterns for PIN shows obvious Bragg peaks splitting above 16 GPa; consistent with a symmetry lowering transition. The transition at 0.5 GPa is identified as a pseudo-cubic to orthorhombic (Pbam) structural change whereas the transition at 16 GPa is isostructure and associated with changes in linear compressibility and octahedral titling, and the transition at 30 GPa is associated to an orthorhombic to monoclinic change. First-principles calculations indicate that the Pbam structure is ground state with antiferrodisdortion consistent with experiment. |
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書誌情報 |
Journal of Advanced Dielectrics 巻 05, 号 04, p. 1550033, 発行日 2015-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2010-135X | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1142/S2010135X15500332 | |||||
権利 | ||||||
権利情報 | © The Author(s) | |||||
権利 | ||||||
権利情報 | This is an Open Access article published by World Scientific Publishing Company. It is distributed under the terms of the Creative Commons Attribution 4.0 (CC-BY) License. Further distribution of this work is permitted, provided the original work is properly cited. | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | World Scientific Publishing |