abstract |
A ferroelectric film having a ferroelectric shown by a general formula (Pb 1-d Bi d )(B 1-a X a )O 3 , 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”. |