Electrical component comprising a material with a perovskite structure and optimized electrodes and fabrication process

US8692443B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Matthieu Cueff · Grenoble, FR
• Emmanuel Defay · Saint-Égrève, FR
• Gwenael Le Rhun · Grenoble, FR

Key dates

• Filing date: May 25, 2012
• Grant date: Apr 8, 2014
• Expiry date: Nov 15, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N30/878

Abstract

An electrical component comprises a lead-based perovskite crystal material layer between a lower electrode on the surface of a substrate and an upper electrode, characterized in that the lower electrode comprises a stabilizing first layer made of a first material and a seeding second layer made of a second material, the first and second materials having the same chemical composition but different structural parameters and/or densities. A process for fabricating a component is also provided, in which the material with a perovskite structure may be PZT with a (100) or (111) orientation.