@article{oai:niigata-u.repo.nii.ac.jp:00003604, author = {Toda, Kenji and Kameo, Yutaka and Fujimoto, Masayuki and Sato, Mineo}, issue = {8}, journal = {日本セラミックス協会学術論文誌}, month = {}, note = {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.}, pages = {737--741}, title = {Crystal Structure and lonic Conductivity of a Layered Perovskite, Na2La2Ti3O10}, volume = {102}, year = {1994} }