| abstract |
Provided is a piezoelectric material having a good piezoelectricity, which is made of a compound containing no lead and alkali metal. A combination of A x B 10 O 30 and A 'x' B '10 O 30 tungsten bronze structure oxide represented by lead-free and alkali metal, to form a composition phase boundary, the piezoelectric Good piezoelectric material. The A x B 10 O 30 is Ba 4 Bi 2/3 Nb 10 O 30 and the A ′ x ′ B ′ 10 O 30 is Sr 3 Ba 2 Nb 10 O 30 , a piezoelectric material made of a tungsten bronze structure oxide. . [Selection] Figure 3 |