JPS57145384A - Piezoelectric ceramic and manufacture thereof - Google Patents

Piezoelectric ceramic and manufacture thereof

Info

Publication number
JPS57145384A
JPS57145384A JP56030687A JP3068781A JPS57145384A JP S57145384 A JPS57145384 A JP S57145384A JP 56030687 A JP56030687 A JP 56030687A JP 3068781 A JP3068781 A JP 3068781A JP S57145384 A JPS57145384 A JP S57145384A
Authority
JP
Japan
Prior art keywords
ceramic
subcomponent
atoms
main component
composition
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.)
Granted
Application number
JP56030687A
Other languages
Japanese (ja)
Other versions
JPS6022516B2 (en
Inventor
Mitsuhiro Takada
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 Metals Ltd
Original Assignee
Sumitomo Special Metals Co 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 Sumitomo Special Metals Co Ltd filed Critical Sumitomo Special Metals Co Ltd
Priority to JP56030687A priority Critical patent/JPS6022516B2/en
Publication of JPS57145384A publication Critical patent/JPS57145384A/en
Publication of JPS6022516B2 publication Critical patent/JPS6022516B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/853—Ceramic compositions

Abstract

PURPOSE:To obtain the ceramic having high voltage electrical constants and high specific permittivity, by substituting part of Pb atoms in four component solid solution series of Pb(Ni1/3Nb2/3)O3-Pb(Zn1/3Nb2/3)O3-PbTiO3-PbZrO3 by Sr, adding Li2CO3 as a subcomponent, thereby facilitating the sintering property. CONSTITUTION:When basic composition formula is expressed by APb(Ni1/3Nb 2/3)O3.BPb(Zn1/3Nb2/3)O3.CPbTiO3.DPbZrO3 where A+B+C+D=1, the symbols A-D which limit the extent of the composition satisfy the following equations. In the main component composition wherein up to 15% of the Pb atoms are substituted by Sr, Li2O3 is included as the subcomponent at the rate of 0.25-1.50wt% with respect to the main component. The equations limiting the A-D are 0.01<=A<=0.55, 0.01<=B<=0.70, 0.10<=C<=0.60, and 0.01<=D<=0.70. In this method, an equipment using this ceramic can be operated at relatively low voltages and is suitable for piezoelectric pickups and the like.
JP56030687A 1981-03-03 1981-03-03 Piezoelectric ceramics for audio equipment Expired JPS6022516B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56030687A JPS6022516B2 (en) 1981-03-03 1981-03-03 Piezoelectric ceramics for audio equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56030687A JPS6022516B2 (en) 1981-03-03 1981-03-03 Piezoelectric ceramics for audio equipment

Publications (2)

Publication Number Publication Date
JPS57145384A true JPS57145384A (en) 1982-09-08
JPS6022516B2 JPS6022516B2 (en) 1985-06-03

Family

ID=12310588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56030687A Expired JPS6022516B2 (en) 1981-03-03 1981-03-03 Piezoelectric ceramics for audio equipment

Country Status (1)

Country Link
JP (1) JPS6022516B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761242A (en) * 1985-05-30 1988-08-02 Nippondenso Co., Ltd. Piezoelectric ceramic composition
EP0715360A1 (en) * 1994-11-28 1996-06-05 Murata Manufacturing Co., Ltd. Piezoelectric ceramic composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761242A (en) * 1985-05-30 1988-08-02 Nippondenso Co., Ltd. Piezoelectric ceramic composition
EP0715360A1 (en) * 1994-11-28 1996-06-05 Murata Manufacturing Co., Ltd. Piezoelectric ceramic composition

Also Published As

Publication number Publication date
JPS6022516B2 (en) 1985-06-03

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