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Site occupation and structural change in Li substituted AgNbO3 were probed by 7Li NMR. Characteristic changes in the 7Li NMR spectra depending on Li content were observed. Analysis of integrated intensity of the spectra revealed that 16% of substituted Li+ ions occupy quasi-stable sites induced in crystal structure at 300K in the 5mol% Li substituted sample and would be in the state of motion, which...
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