Title:
強誘電性材料の極性調整方法
Document Type and Number:
Japanese Patent JP2006500761
Kind Code:
A
Abstract:
A method of producing an actuator includes shaping a block of ferroelectric material to provide an active element of the actuator. The element includes a stack of ferroelectric layers with adjacent layers separated by electrodes arranged parallel to end faces of the element. The method includes applying a primary electrode to the end faces, immersing the element and the primary electrode within a dielectric fluid, applying a primary poling voltage to the primary electrode so as to polarize the element in a first polarization direction, applying a secondary external electrode to side faces of the element, and applying a secondary poling voltage to the secondary electrode to polarize alternate layers along the first polarization direction and the other layers along a second, oppositely-directed polarization axis. The method may also include applying a conductive film to the end faces and/or applying heat to help evaporate the dielectric fluid.
Inventors:
Goat, christopher, andrew
Application Number:
JP2004512213A
Publication Date:
January 05, 2006
Filing Date:
June 06, 2003
Export Citation:
Assignee:
Delphi Technologies Incorporated
International Classes:
F02M51/00; F02M51/06; H01L41/083; H01L41/187; H01L41/257; H02N2/00
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada