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:
Nov. 06, 2007
Filed:
Apr. 24, 2006
Sergei V. Kalinin, Knoxville, TN (US);
Arthur P. Baddorf, Knoxville, TN (US);
Ho Nyung Lee, Oak Ridge, TN (US);
Junsoo Shin, Knoxville, TN (US);
Alexei L. Gruverman, Raleigh, NC (US);
Edgar Karapetian, Malden, MA (US);
Mark Kachanov, Arlington, MA (US);
Sergei V. Kalinin, Knoxville, TN (US);
Arthur P. Baddorf, Knoxville, TN (US);
Ho Nyung Lee, Oak Ridge, TN (US);
Junsoo Shin, Knoxville, TN (US);
Alexei L. Gruverman, Raleigh, NC (US);
Edgar Karapetian, Malden, MA (US);
Mark Kachanov, Arlington, MA (US);
UT-Battelle, LLC, Oak Ridge, TN (US);
Abstract
A method for switching the direction of polarization in a relatively small domain in a thin-film ferroelectric material whose direction of polarization is oriented normal to the surface of the material involves a step of moving an electrically-chargeable tip into contact with the surface of the ferroelectric material so that the direction of polarization in a region adjacent the tip becomes oriented in a preselected direction relative to the surface of the ferroelectric material. The tip is then pressed against the surface of the ferroelectric material so that the direction of polarization of the ferroelectric material within the area of the ferroelectric material in contact with the tip is reversed under the combined effect of the compressive influence of the tip and electric bias.