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Piezoelectric ceramics, piezoelectric element, liquid ejection head, ultrasonic motor, and dust removing device
Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (Qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain. The first crystal grain has an average equivalent circle diameter of 2 μm or more and 30 μm or less. The first crystal grain includes a perovskite-type metal oxide represented by the following general formula (1) as a main component, and the second crystal grain includes a perovskite-type metal oxide represented by the following general formula (2) as a main component: (1) xBaTiO3-yCaTiO3-zCaZrO3; and (2) x′BaTiO3-y′CaTiO3-z′CaZrO3, provided that x, y, z, x′, y′, and z′ satisfy x+y+z=1, x′+y′+z′=1, 0≦x′≦0.15, 0.85≦y′≦1, 0≦z≦0.05, x>x′, 00.
Piezoelectric ceramics, piezoelectric element, liquid ejection head, ultrasonic motor, and dust removing device
Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (Qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain. The first crystal grain has an average equivalent circle diameter of 2 μm or more and 30 μm or less. The first crystal grain includes a perovskite-type metal oxide represented by the following general formula (1) as a main component, and the second crystal grain includes a perovskite-type metal oxide represented by the following general formula (2) as a main component: (1) xBaTiO3-yCaTiO3-zCaZrO3; and (2) x′BaTiO3-y′CaTiO3-z′CaZrO3, provided that x, y, z, x′, y′, and z′ satisfy x+y+z=1, x′+y′+z′=1, 0≦x′≦0.15, 0.85≦y′≦1, 0≦z≦0.05, x>x′, 00.
Piezoelectric ceramics, piezoelectric element, liquid ejection head, ultrasonic motor, and dust removing device
SHIMADA MIKIO (author) / AIBA TOSHIAKI (author) / IFUKU TOSHIHIRO (author) / MATSUDA TAKANORI (author) / KUBOTA MAKOTO (author) / FURUTA TATSUO (author) / HAYASHI JUMPEI (author)
2016-08-09
Patent
Electronic Resource
English
IPC:
H01L
Halbleiterbauelemente
,
SEMICONDUCTOR DEVICES
/
B08B
Reinigen allgemein
,
CLEANING IN GENERAL
/
B41J
TYPEWRITERS
,
Schreibmaschinen
/
C04B
Kalk
,
LIME
/
G02B
Optische Elemente, Systeme oder Geräte
,
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
/
G03B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM
,
Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien
/
H02N
Elektrische Maschinen, soweit nicht anderweitig vorgesehen
,
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
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