Tdk Corporation

Kumiko Iezumi

Junichi Yamazaki

Norimasa Sakamoto

Masahito Furukawa

Takeo Tsukada

Satoshi Ozawa

Hideya Sakamoto

Masaru Nanao

Tomohiro Sogabe

Masayoshi Inoue

Keisuke Itakura

Yumiko Kozasa

A piezoelectric ceramic composition includes: a composite oxide, as a main component thereof, represented by the composition formula,Pb[(ZnNb)TiZr]O,

Piezoelectric ceramic composition and laminated piezoelectric element

Provided is a piezoelectric ceramic composition capable of being sintered at low temperatures and in a low-oxygen reductive atmosphere and capable of attaining a sufficient displacement even at high voltages of 1 kV/mm or more. The piezoelectric ceramic composition includes: a composite oxide, as a main constituent thereof, represented by the following composition formula; Cu and/or Ag, each as a first additive, Cu being included in a content &#x3b1;, in terms of CuO, falling within a range 0&#x3c;&#x3b1;&#x2266;0.5% by mass and Ag being included in a content &#x3b2;, in terms of AgO, falling within a range 0&#x3c;&#x3b2;&#x2266;0.4% by mass, in relation to the main constituent; wherein: composition formula: Pb[(ZnNb)TiZr]O, where 0.96&#x2266;a&#x2266;1.03, 0.005&#x2266;x&#x3c;0.05, 0.42&#x2266;y&#x2266;0.53, 0.45&#x2266;z&#x2266;0.56, and x+y+z=1.

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Tokyo, Japan

Kumiko Iezumi