DIELECTRIC THIN FILM, DIELECTRIC THIN FILM ELEMENT, PIEZOELECTRIC ACTUATOR, PIEZOELECTRIC SENSOR, HEAD ASSEMBLY, HEAD STACK ASSEMBLY, HARD DISK DRIVE, PRINTER HEAD AND INKJET PRINTER DEVICE
Provided is a dielectric thin film including a metal oxide. The metal oxide includes bismuth, sodium, barium, and titanium, at least a part of the metal oxide is a tetragonal crystal having a perovski…
