GB1090037A - Poling method of ferroelectric ceramic bodies - Google Patents

Poling method of ferroelectric ceramic bodies

Info

Publication number
GB1090037A
GB1090037A GB9251/65A GB925165A GB1090037A GB 1090037 A GB1090037 A GB 1090037A GB 9251/65 A GB9251/65 A GB 9251/65A GB 925165 A GB925165 A GB 925165A GB 1090037 A GB1090037 A GB 1090037A
Authority
GB
United Kingdom
Prior art keywords
minutes
voltage
period
temperature
sample
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB9251/65A
Inventor
Akio Kumada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to GB9251/65A priority Critical patent/GB1090037A/en
Publication of GB1090037A publication Critical patent/GB1090037A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/04—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning
    • H10N30/045—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

1,090,037. Piezoelectric elements. HITACHI SEISAKUSHO KABUSHIKI KAISHA. March 4, 1965, No. 9251/65. Heading H1E. The polarizing voltage applied to a ferroelectric body is periodically inverted. In the embodiment described, the ferroelectric sample is immersed in oil at a temperature of 100‹ C. and a voltage of 80 kV/cm. applied, the voltage being reversed every 2 minutes or every 5 minutes for a period of 45 minutes. A final application of the voltage for a period of 10 minutes is made after the sample has been cooled to room temperature. A voltage which steadily increases during the period of application may be used. Alternating voltages of sine, triangular, or rectangular waveform, and voltages at mains frequency (50 cycles) may be used. The method may be applied to PZT compositions which may contain Sr, Ba, La, Na and K as additives or substituents. It is also applicable to BaTiO 3 and to (K 0À5 Na 0À5 )NbO 3 . For the latter compositions a voltage of 40 kV. reversed every 5 minutes for a period of 30 minutes at a temperature of 80‹ C. may be used. Where the resistance of the sample is too low at room temperature, poling may be carried out at a lower temperature.
GB9251/65A 1965-03-04 1965-03-04 Poling method of ferroelectric ceramic bodies Expired GB1090037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9251/65A GB1090037A (en) 1965-03-04 1965-03-04 Poling method of ferroelectric ceramic bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9251/65A GB1090037A (en) 1965-03-04 1965-03-04 Poling method of ferroelectric ceramic bodies

Publications (1)

Publication Number Publication Date
GB1090037A true GB1090037A (en) 1967-11-08

Family

ID=9868365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9251/65A Expired GB1090037A (en) 1965-03-04 1965-03-04 Poling method of ferroelectric ceramic bodies

Country Status (1)

Country Link
GB (1) GB1090037A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129209A (en) * 1982-10-22 1984-05-10 Pennwalt Corp Reverse field stabilization of polarized polymer films
GB2139810A (en) * 1983-05-09 1984-11-14 Daikin Ind Ltd Process for polarizing polymeric piezoelectric material
DE102009004721B3 (en) * 2009-01-15 2010-09-02 Epcos Ag Circuit with a voltage-dependent component and method for operating the circuit
EP2348554A3 (en) * 2010-01-26 2014-07-30 Robert Bosch GmbH Method for producing a piezo actuator with a multi-layer structure of piezo layers and piezo actuator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129209A (en) * 1982-10-22 1984-05-10 Pennwalt Corp Reverse field stabilization of polarized polymer films
GB2139810A (en) * 1983-05-09 1984-11-14 Daikin Ind Ltd Process for polarizing polymeric piezoelectric material
DE102009004721B3 (en) * 2009-01-15 2010-09-02 Epcos Ag Circuit with a voltage-dependent component and method for operating the circuit
US8766741B2 (en) 2009-01-15 2014-07-01 Qualcomm Technologies, Inc. Circuit comprising a voltage-dependent component and method for operating the circuit
EP2348554A3 (en) * 2010-01-26 2014-07-30 Robert Bosch GmbH Method for producing a piezo actuator with a multi-layer structure of piezo layers and piezo actuator

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