Piezoelectric ceramic composition
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United States of America Patent
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Oct 13, 2015
Grant Date -
Apr 9, 2015
app pub date -
Jun 26, 2012
filing date -
Jun 26, 2012
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Abstract
This invention provides for a piezoelectric ceramic composition having a lead-free alkaline niobate piezoelectric ceramic composition with a favorable piezoelectric property. This invention refers to a piezoelectric ceramic composition 10 that is described as composition formula {Lix(K1-yNay)1-x}(Nb1-zSbz)O3 including the additives of the metallic elements Bi and Fe within the range of the following relational expressions: 0.03≦x≦0.045; 0.5≦y≦0.58; 0.03≦z≦0.045; and 0.006≦v≦w≦0.010 whereof v is the additive amount of Bi (molar ratio), and w is the additive amount of Fe (molar ratio).
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