| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2012-11-26 |
| タイトル |
|
|
タイトル |
Inelastic Neutron Scattering Study of Ferroelectric Phase Transition in Lithium Heptagermanate (Li(2)Ge(7)O(15)) |
| 言語 |
|
|
言語 |
eng |
| DOI |
|
|
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関連識別子 |
https://doi.org/10.1080/00150193.2011.542695 |
|
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関連名称 |
10.1080/00150193.2011.542695 |
| キーワード |
|
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主題 |
Ferroelectrics, Soft phonon mode, Critical slowing-down, Inelastic neutron scattering, Li(2)Ge(7)O(15) |
| 資源タイプ |
|
|
資源 |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| 著者 |
Takeda, Mitsuo W.
Noda, Yukio
Yamaguchi, Toshihisa
|
| 信州大学研究者総覧へのリンク |
|
|
氏名 |
Takeda, Mitsuo W. |
|
URL |
http://soar-rd.shinshu-u.ac.jp/profile/ja.gmkVPVAU.html |
| 出版者 |
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出版者 |
TAYLOR & FRANCIS LTD |
| 引用 |
|
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内容記述 |
FERROELECTRICS. 412(0):45-51 (2011) |
| 書誌情報 |
FERROELECTRICS
巻 412,
p. 45-51,
発行日 2011-10-24
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| 抄録 |
|
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内容記述 |
Phonon dispersions in ferroelectric lithium heptagermanate Li(2)Ge(7)O(15) (LGO) were measured by inelastic neutron scattering in the vicinity of the transition temperature T(C) = 283.5 K. The (300) reflections show more pronounced temperature dependence than the (500) reflections. The energy of a peak corresponding to the Brillouin zone-center phonon, around 0.5 meV at 297.0 K, decreases as the temperature decreases. Then, this inelastic component disappears into the central component at 288.0 K, just above T(C). The present phonon shows the typical soft mode feature and shows good accordance with the B(1u) mode observed by hyper-Raman and FTIR measurements. It is confirmed that the ferroelectric phase transition in LGO is associated with the soft optical phonon at the zone center. Moreover, elastic diffuse scattering is observed below 0.1 meV. This implies that there exists a critical phenomenon at energies below than 0.1 meV. |
| 資源タイプ（コンテンツの種類） |
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0015-0193 |
| 書誌レコードID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00644949 |
| 権利 |
|
|
権利情報 |
Copyright© 2011 Taylor & Francis. This is an Author's Accepted Manuscript of an article published in "FERROELECTRICS. 412:45-51 (2011)" Ferroelectrics is available online at: http://www.tandfonline.com/10.1080/00150193.2011.542695 |
| 出版タイプ |
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出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| WoS |
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|
URL |
http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000289564000009 |
INELASTIC_NEUTRON_SCATTERING_STUDY_FERROELECTRIC.pdf (1.0 MB)
