| 摘要 |
<p>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<SUB>X</SUB>(K<SUB>1-Y</SUB>Na<SUB>Y</SUB>)<SUB>1-X</SUB>}(Nb<SUB>1-Z-W</SUB>Ta<SUB>Z</SUB>Sb<SUB>W</SUB>)O<SUB>3 </SUB>(wherein 0 = x = 0.2, 0 = y = 1, 0 < z = 0.4, and 0 < w = 0.2) General formula (II): ABO<SUB>3</SUB> (wherein A represents Bi, and B represents at least one of Fe, In and Sc)</p> |
