Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PIEZOELECTRIC CERAMIC, METHOD FOR PRODUCING PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS
PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic which has a high mechanical quality factor and small electric power consumption, and does not contain lead and alkali metals, and to provide a piezoelectric element using the same.SOLUTION: Provided is a piezoelectric ceramic which comprises a perovskite type metal oxide, containing barium titanate, and Mn and which has remnant polarization. When a surface along a direction of the remnant polarization of the piezoelectric ceramic is chosen as a measuring surface, the (002)/(200) diffraction intensity ratio according to X-ray diffraction of the measuring surface at room temperature is 1.0 or more, a ratio c/a of the lattice constant c of the c axis and the lattice constant a of the a axis of the piezoelectric ceramic at room temperature is 1.004≤c/a≤1.010, and a half band width of the (002) diffraction peak at room temperature is 1.2° or less. Also provided is a piezoelectric element using the piezoelectric ceramic.
【課題】 高い機械的品質係数を有し、消費電力が小さい、鉛やアルカリ金属を含まない圧電セラミックスおよびそれを用いた圧電素子を提供する。【解決手段】 そのための本発明はチタン酸バリウムを含有するペロブスカイト型金属酸化物とＭｎとを含有する、残留分極を有する圧電セラミックスであって、前記圧電セラミックスの残留分極の方向に沿った面を被測定面とした際に、室温の前記被測定面のＸ線回折による（００２）／（２００）回折強度比が１．０以上であり、室温の前記圧電セラミックスのｃ軸の格子定数ｃとａ軸の格子定数ａとの比ｃ／ａが１．００４≰ｃ／ａ≰１．０１０であり、室温の前記（００２）回折ピークの半値幅が１．２?以下である圧電セラミックスおよびそれを用いた圧電素子。【選択図】 図１
PIEZOELECTRIC CERAMIC, METHOD FOR PRODUCING PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS
PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic which has a high mechanical quality factor and small electric power consumption, and does not contain lead and alkali metals, and to provide a piezoelectric element using the same.SOLUTION: Provided is a piezoelectric ceramic which comprises a perovskite type metal oxide, containing barium titanate, and Mn and which has remnant polarization. When a surface along a direction of the remnant polarization of the piezoelectric ceramic is chosen as a measuring surface, the (002)/(200) diffraction intensity ratio according to X-ray diffraction of the measuring surface at room temperature is 1.0 or more, a ratio c/a of the lattice constant c of the c axis and the lattice constant a of the a axis of the piezoelectric ceramic at room temperature is 1.004≤c/a≤1.010, and a half band width of the (002) diffraction peak at room temperature is 1.2° or less. Also provided is a piezoelectric element using the piezoelectric ceramic.
【課題】 高い機械的品質係数を有し、消費電力が小さい、鉛やアルカリ金属を含まない圧電セラミックスおよびそれを用いた圧電素子を提供する。【解決手段】 そのための本発明はチタン酸バリウムを含有するペロブスカイト型金属酸化物とＭｎとを含有する、残留分極を有する圧電セラミックスであって、前記圧電セラミックスの残留分極の方向に沿った面を被測定面とした際に、室温の前記被測定面のＸ線回折による（００２）／（２００）回折強度比が１．０以上であり、室温の前記圧電セラミックスのｃ軸の格子定数ｃとａ軸の格子定数ａとの比ｃ／ａが１．００４≰ｃ／ａ≰１．０１０であり、室温の前記（００２）回折ピークの半値幅が１．２?以下である圧電セラミックスおよびそれを用いた圧電素子。【選択図】 図１
PIEZOELECTRIC CERAMIC, METHOD FOR PRODUCING PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS
圧電セラミックス、圧電セラミックスの製造方法、圧電素子、および電子機器
HAYASHI JUNPEI (Autor:in) / WATANABE TAKAYUKI (Autor:in) / KAMIBAYASHI AKIRA (Autor:in) / TAKEDA KENICHI (Autor:in)
10.09.2015
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
/
B06B
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
,
Erzeugen oder Übertragen mechanischer Schwingungen allgemein
/
B41J
TYPEWRITERS
,
Schreibmaschinen
/
G02B
Optische Elemente, Systeme oder Geräte
,
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
/
G03B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM
,
Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien
/
H01L
Halbleiterbauelemente
,
SEMICONDUCTOR DEVICES
/
H02N
Elektrische Maschinen, soweit nicht anderweitig vorgesehen
,
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
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