A piezoelectric element includes: a lower electrode film provided on a substrate; a piezoelectric layer provided on the lower electrode film; and an upper electrode film provided on the piezoelectric layer, wherein the lower electrode film includes columnar crystals of platinum, and an oxide exists in the grain boundaries of the crystals of platinum.

 
Web www.patentalert.com

< Wafer bonding of thinned electronic materials and circuits to high performance substrates

> VUV-excited device with blue-emitting phosphor

> Information display sheet

~ 00520