Oxygen-17 nuclear magnetic resonance measurements on apatite-type lanthanum silicate (La9.33(SiO4)6O2)

Kiyono, Hajime; Matsuda, Yuuya; Shimada, Toshihiro et al.

Solid State Ionics, 2012, 228, 64-69

Permalink : https://hdl.handle.net/2115/51907

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アクセス権
open access
URI
https://hdl.handle.net/2115/51907
タイトル
Oxygen-17 nuclear magnetic resonance measurements on apatite-type lanthanum silicate (La9.33(SiO4)6O2)
著者
Kiyono, Hajime ; Matsuda, Yuuya ; Shimada, Toshihiro ; Ando, Mariko ; Oikawa, Itaru ; Maekawa, Hideki ; Nakayama, Susumu ; Ohki, Shinobu ; Tansho, Masataka ; Shimizu, Tadashi ; Florian, Pierre ; Massiot, Dominuqie
著者名
Kiyono, Hajime
著者名
Matsuda, Yuuya
e-Rad_Researcher
10262148
著者名
Shimada, Toshihiro
著者名
Ando, Mariko
著者名
Oikawa, Itaru
著者名
Maekawa, Hideki
著者名
Nakayama, Susumu
著者名
Ohki, Shinobu
著者名
Tansho, Masataka
著者名
Shimizu, Tadashi
著者名
Florian, Pierre
著者名
Massiot, Dominuqie
言語
英語
キーワード
Apatite
Lanthanum silicate
Oxide-ion conductor
Solid-state NMR
MQ MAS
High-temperature NMR
発行日
2012-11
出版者
Elsevier
収録物名
Solid State Ionics
巻(号)
228
ページ
64-69
抄録
We used magic angle spinning (MAS), multiquantum (MQ)-MAS, and high-temperature (HT) nuclear magnetic resonance (NMR) measurements to investigate the oxide-ion conduction path of oxygen-17 (O-17) in apatite-type lanthanum silicate La9.33(SiO4)6O2. A highly crystalline apatite-type lanthanum silicate was specifically synthesized for the measurements. MAS and MQ-MAS NMR confirmed that four kinds of oxide-ion sites are present in the structure and showed a small extra peak (< 1%) possibly due to an interstitial site. The high-temperature measurements showed that the line shape changed and sharpened with increasing temperature from 200 °C, and the peak position shifted at 700 °C. The comparison of the results between MAS NMR (room-temperature) and HT static NMR showed the exchange of oxide ions bonded to Si (O1, O2, and O3) but the apparent exchange between the oxide ions (O1, O2, and O3) and the oxide ion at the isolated site (O4) is not observed. The exchange of the oxide ions that are bonded to Si (O1, O2, and O3) suggests that they are the main diffusion species in oxide-ion conductivity.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
0167-2738
NCID
AA00443404
関連情報
URI
http://www.sciencedirect.com/science/article/pii/S0167273812005401
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.ssi.2012.09.016