Reduced fatigue ferroelectric element
US5736759A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Jul 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D1/684
Abstract
A fatigue resistent ferroelectric element having a ferroelectric body, and regions of enhanced oxide ion mobility on opposite sides of the body to which are attached electrodes. In one embodiment, an element made from the known ferroelectric material PZT is treated at each of two surfaces where the electrodes are to be attached with a fast ion conductor, such as doped yttria stabilized zirconia. In another embodiment, a ferroelectric element constructed essentially of strontium tantalite (SrTaO.sub.6) has each of its surfaces where electrodes are to be attached treated with bismuth oxide (Bi.sub.2 O.sub.3) that is then diffused into surface regions of the element during an annealing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.