Patent ID: 9306150
Filing Date: 2016-04-05
CPC Classification: B06B,B41J,C04B,G02B,H01L,H02N,H04N

Claim Text:
1. A method for manufacturing a piezoelectric material, the method comprising: preparing raw material that contains at least each of Ba, Ca, Ti, Zr, Mn, and Bi, the raw material being selected from among Ba compound, Ca compound, Ti compound, Zr compound, Sn compound, Mn compound, Li compound, Bi compound, Si compound, and B compound; fabricating a compact from the raw material; and sintering the compact at a temperature not lower than 1100° C. and not higher than 1550° C. to obtain a piezoelectric material, wherein the piezoelectric material includes: a main component containing a perovskite-type metal oxide expressed by the following general formula (1); a first subcomponent containing Mn; a second subcomponent containing Li; and a third subcomponent containing Bi, wherein the content of Mn on a metal basis is not less than 0.04 parts by weight and is not greater than 0.36 parts by weight when the metal oxide is 100 parts by weight, the content α of Li on a metal basis is equal to or less than 0.0012 parts by weight (including 0 parts by weight) when the metal oxide is 100 parts by weight, and content β of Bi on a metal basis is not less than 0.042 parts by weight and is not greater than 0.850 parts by weight when the metal oxide is 100 parts by weight (in the formula (1), 0.09≦x≦0.30, 0.025≦y≦0.085, 0≦z≦0.02, and 0.986≦a≦1.02).