Title:
VARIABLE CAPACITIVE ELEMENT
Document Type and Number:
Japanese Patent JP2011211029
Kind Code:
A
Abstract:
To reduce the size of a variable capacitive element using a ferroelectric substance that can attain expansion of a variable region of electrostatic capacity, while at the same time, maintaining a high Q-value.
The variable capacitive element using a ferroelectric substance is provided with a ferroelectric layer 21, connected between first and second electrodes 22, 24; the ferroelectric layer 21 has a Perovskite structure that is phase-transformed from cubic crystal to tetragonal phase by compression stress Y that the ferroelectric layer has inside; and by using the ferroelectric layer, the variable capacitive element can be reduced in size.
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Inventors:
MURASHIMA YUJI
Application Number:
JP2010078452A
Publication Date:
October 20, 2011
Filing Date:
March 30, 2010
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
H01G7/06; H01G7/00
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii
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