| 摘要 |
A ferroelectric film having a ferroelectric shown by a general formula (Pb<SUB>1-d</SUB>Bi<SUB>d</SUB>)(B<SUB>1-a</SUB>X<SUB>a</SUB>)O<SUB>3</SUB>, B including at least one of Zr and Ti, X including at least one of Nb and Ta, "a" being in a range of "0.05<=a<=0.4", and "d" being in a range of "0<d<1".
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