PIEZOELECTRIC MATERIAL AND DEVICES INCLUDING THE SAME

Provided is a piezoelectric material including perovskite-type metal oxide containing Na, Nb, Ba, Ti, and Mg, which is a lead-free type piezoelectric material indicating excellent piezoelectric properties. Relative numbers a, b, c, d, and e in a ratio of numbers of Na, Nb, Ba, Ti, and Mg atoms conta...

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Bibliographische Detailangaben
Hauptverfasser:	YABUTA Hisato, IMAI Hiroki, MAEDA Kenji, MATSUDA Takanori, KUBOTA Makoto, SHIMIZU Chiemi, UCHIDA Fumio, UEDA Miki, OSHIMA Kanako
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LIME, MAGNESIA LINING MACHINES METALLURGY PERFORMING OPERATIONS PRINTING REFRACTORIES SELECTIVE PRINTING MECHANISMS SLAG STAMPS TRANSPORTING TREATMENT OF NATURAL STONE TYPEWRITERS
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Zusammenfassung:	Provided is a piezoelectric material including perovskite-type metal oxide containing Na, Nb, Ba, Ti, and Mg, which is a lead-free type piezoelectric material indicating excellent piezoelectric properties. Relative numbers a, b, c, d, and e in a ratio of numbers of Na, Nb, Ba, Ti, and Mg atoms contained in the piezoelectric material satisfy a following relational expression (1),0.430≤a≤0.460,0.433≤b≤0.479,0.040≤c≤0.070,0.0125≤d≤0.0650,0.0015≤e≤0.0092,0.9×3⁢e≤c−d≤1.1×3⁢e,a+b+c+d+e=1,where a, b, c, d, and e denote the relative numbers of Na, Nb, Ba, Ti, and Mg atoms, respectively.