The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2003
Filed:
Jan. 24, 2002
Applicant:
Inventors:
Assignee:
Agency of Industrial Science and Technology, Tokyo-To, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01G 4/06 ;
U.S. Cl.
CPC ...
H01G 4/06 ;
Abstract
Disclosed is an electronic device having a multilayered structure consisting of (a) a substrate, (b) an electroconductive layer of lanthanum nickel oxide LaNiO having a perovskite structure formed on the substrate surface and (c) a dielectric layer of PZT having an oriented perovskite structure formed on the electroconductive layer. The device exhibits excellent piezoelectric effect under mechanical stress and stable hysteresis phenomenon of electric polarization under application of electric fields so that the device is useful as a stress sensor and as a memory device. A method for the preparation of the multilayered device is disclosed.