2024-03-28T20:06:54Z
https://niigata-u.repo.nii.ac.jp/oai
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2022-12-15T04:15:40Z
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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 lonic Conductivity of a Layered Perovskite, Na2La2Ti3O10
Toda, Kenji
43959
Kameo, Yutaka
43960
Fujimoto, Masayuki
43961
Sato, Mineo
43962
Rietveld analysis
Ionic conductivity
Layered perovskite
Sodium lanthanum titanate
An ion-exchangeable layered perovskite compound, Na_2La_2Ti_3O_<10>, was directly synthesized by a solid-state reaction. The crystal structure of Na_2La_2Ti_3O_<10> 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 Na_2La_2Ti_3O_<10> was not very high compared with those of niobate compounds, NaLaNb_2O_7 and NaCa_2NaNb_4O_<13>. 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
application/pdf
日本セラミックス協会学術論文誌
8
102
737
741
AN10040326
0914-5400
https://niigata-u.repo.nii.ac.jp/record/3604/files/2009030026.pdf
eng
http://doi.org/10.2109/jcersj.102.737