| 摘要 |
Disclosed is a droplet ejection head comprising a piezoelectric actuator using a piezoelectric porcelain composition containing no lead and having low temperature dependence of piezoelectric constant. Specifically disclosed is a droplet ejection head characterized by comprising a piezoelectric actuator using a piezoelectric porcelain composition containing a solid solution of a main component represented by the general formula (I) below and a sub-component represented by the general formula (II) below which is added in an amount of less than 1 mol% relative to the total amount of the solid solution. General formula (I): {Li X (K 1-Y Na Y ) 1-X }(Nb 1-ZW TazSb W )O 3 (wherein 0 ‰¤ x ‰¤ 0.2, 0 ‰¤ y ‰¤ 1, 0 < z ‰¤ 0.4, and 0 < w ‰¤ 0.2) General formula (II): ABO 3 (wherein A represents Bi, and B represents at least one of Fe, In and Sc)
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