Piezoelectric transducer including fixing portion overlapping base portion and gap between beam portions

A piezoelectric transducer comprising:

• a base portion;
• a plurality of beam portions each of which includes a plurality of layers, is supported by the base portion at an end portion, and extends in a direction away from the base portion at a position above the base portion;
• and
• at least one fixing portion disposed on the plurality of beam portions so as to sandwich the end portion of each of the beam portions between the at least one fixing portion and the base portion;
• wherein
• each of the plurality of beam portions includes a piezoelectric layer, an upper electrode layer on an upper side of the piezoelectric layer, and a lower electrode layer facing at least a portion of the upper electrode layer with the piezoelectric layer interposed between the upper electrode layer and the lower electrode layer;
• the at least one fixing portion overlaps at least a portion of the base portion in an up-down direction, and protrudes from the base portion in an extending direction of at least one of the beam portions;
• the plurality of the beam portions are spaced away from each other with a gap interposed therebetween;
• the gap extends radially and continuously from a center portion of the piezoelectric transducer to the at least one fixing portion;
• the at least one fixing portion that overlaps the portion of the base portion in the up-down direction and protrudes from the base portion in the extending direction is disposed directly on the lower electrode layer;
• and
• the at least one fixing portion does not overlap with the upper electrode when viewed in the up-down direction.