PIEZOELECTRIC BODY, MANUFACTURING METHOD THEREOF, PIEZOELECTRIC ELEMENT HAVING THE PIEZOELECTRIC BODY, INJECT HEAD, AND INJECT TYPE RECORDING DEVICE

• Main Authors: KANNO, ISAKU, HARA, SHINTARO, KAMADA, TAKESHI, MATSUNAGA, TOSHIYUKI
• Format: Patent
• Language: English; French; German
• Published: 23.09.2009
• Edition: 7
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; CONCRETE; CORRECTION OF TYPOGRAPHICAL ERRORS; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INORGANIC CHEMISTRY; LIME, MAGNESIA; LINING MACHINES; METALLURGY; PERFORMING OPERATIONS; PRINTING; REFRACTORIES; SELECTIVE PRINTING MECHANISMS; SLAG; STAMPS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF NATURAL STONE; TYPEWRITERS

In a piezoelectric element comprising a first electrode 2 provided on a substrate 1, a piezoelectric material 3 provided on the first electrode 2 and a second electrode 4 provided on the piezoelectric material 3, the piezoelectric material 3 is configured so as to have a perovskite type crystal structure which is represented by a formula ABO3 and in which the main component for the A site is Pb and the main components for the B site are Zr, Ti and Pb, and configured so that a ratio of Pb atoms to all atoms in the B site is more than 3% and not more than 30%. Namely, the piezoelectric material 3 is formed so as to contain Pb excessively and the excess Pb atoms are activated to be Pb<4+> during formation of the piezoelectric material 3 and then introduced into the B site.