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層状ペロブスカイトNa2La2Ti3O10の構造解析とイオン伝導性
Crystal Structure and Ionic Conductivity of a Layered Perovskite, Na2La2Ti3O10
Toda, Kenji
43967
Kameo, Yutaka
43968
Fujimoto, Masayuki
43969
Sato, Mineo
43970
Rietveld analysis
Ionic conductivity
Layered perovskite
Sodium lanthanum titanate
An ion-exchangeable layered perovskite compound, Na2La2Ti3O10, was directly synthesized by a solid-state reaction. The crystal structure of Na2La2Ti3O10 was determined by electron diffraction analysis and Rietveld analysis for the powder X-ray diffraction pattern. The unit cell is tetragonal with a=0.383528 (7) nm, c=2.85737 (7) nm and Z=2 with the space group I4/mmm (No. 139). The structure of this compound is analogous to that of the Ruddlesden-Popper phases. The ionic conductivity of Na2La2Ti3O10 was not very high compared with those of niobate compounds, NaLaNb2O7 and NaCa2NaNb4O13. Such a low ionic conductivity is due to the rigid rock-salt-type coordination around sodium ions located at the interlayer.
journal article
日本セラミックス協会
1994-08
application/pdf
日本セラミックス協会学術論文誌
1181
102
737
741
AN10040326
0914-5400
https://niigata-u.repo.nii.ac.jp/record/3605/files/102_1181_737-741.pdf
eng
http://doi.org/10.2109/jcersj.102.737
https://www.jstage.jst.go.jp/article/jcersj1988/102/1188/102_1188_737/_pdf
本文データは学協会の許諾に基づきJ-Stageから複製したものである