| 摘要 |
Disclose is a liquid 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 represent by the Formula (1) below and a sub-component represented by the Formula (2) below which is added in an amount of less than 1 mol % relative to the total amount of the solid solution. <?in-line-formulae description="In-line Formulae" end="lead"?>{LiX(K1-YNaY)1-X}(Nb1-Z-WTaZSbW)O3, Formula (1)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein x, y, z and W are within the ranges of 0<=x<=0.2, 0<=y<=1, 0<z<=0.4, and 0<w<=0.2, respectively. <?in-line-formulae description="In-line Formulae" end="lead"?>ABO3, Formula (2)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein A represents Bi, and B represents at least any one of Fe, In, and Sc.
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