Patent ID: 9362378
Filing Date: 2016-06-07
CPC Classification: H01L,H03H

Claim Text:
1. A piezoelectric device, comprising: a substrate; a nanocrystalline diamond (NCD) layer disposed on a first surface of the substrate; and a perovskite piezoelectric layer deposited directly on a first surface of the nanocrystalline diamond layer, wherein the perovskite piezoelectric layer is selected from the group consisting of lead lanthanum zirconate titanate (PLZT) and lead zirconate titanate (PZT), and wherein the perovskite piezoelectric layer is annealed at a temperature of 525° C. to 600° C. for 30 minutes to 2 hours in an atmosphere comprising 0.4 mbar to 0.6 mbar oxygen gas.