Page 1 Jpn. J. Appl. Phys. Vol. 33 (1994) pp. 5559-5564 Part 1, No. 9B ...

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As for CaBig Ti O15 and SrBig Ti4O15 the underdamped soft modes were also clearly observed. In contrast, in BaBia Ti4O15 only low-frequency over- dampedĀ ...