发明授权
US09076969B2 Piezoelectric material, piezoelectric element, liquid discharge head, ultrasonic motor, and dust cleaning device 有权
压电材料,压电元件,排液头,超声波电机和除尘装置

Piezoelectric material, piezoelectric element, liquid discharge head, ultrasonic motor, and dust cleaning device
摘要:
A piezoelectric material including a barium bismuth niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. A piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are barium, bismuth, and niobium, and tungsten. The metal elements satisfy following conditions on a molar basis: when Ba/Nb=a, 0.30≦a≦0.40, and when Bi/Nb=b, 0.012≦b≦0.084. The tungsten content on a metal basis is 0.40 to 3.00 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.
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