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The crystal structure of the ion-exchangeable layered perovskite compounds K 2 La 2 Ti 3 O 10 and Li 2 La 2 Ti 3 O 10 were determined by Rietveld analysis for the powder X-ray diffraction pattern. Although the framework of the perovskite layer of lithium compound is the same as those of the corresponding sodium and potassium...
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