A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BISMUTH IRON OXIDE POWDER, METHOD FOR PRODUCING THE SAME, DIELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD AND ULTRASONIC MOTOR
PROBLEM TO BE SOLVED: To provide lead-free dielectric ceramic having a low leakage current and to provide a bismuth iron oxide powder as a raw material for the lead-free dielectric ceramic.SOLUTION: There is provided a bismuth iron oxide powder which is made of a bismuth iron oxide and comprises at least: particles (A) having a perovskite-type crystal structure; particles (B) having a crystal structure classified to the space group Pbam; and particles (C) classified to the space group I23. There is provided dielectric ceramic made of bismuth iron oxide, wherein bismuth iron oxide crystals (C) having a crystal structure classified to the space group Pbam are present at a grain boundary of crystal particles made of bismuth iron oxide crystals (A) having a perovskite-type crystal structure.SELECTED DRAWING: Figure 5
【課題】リーク電流値の低い非鉛誘電体セラミックスおよびその原料となるビスマス鉄酸化物粉体の提供。【解決手段】ビスマス鉄酸化物からなる、少なくとも（Ａ）ペロブスカイト型結晶構造を有する粒子、（Ｂ）空間群Ｐｂａｍに分類される結晶構造を有する粒子、および（Ｃ）空間群Ｉ２３に分類される粒子を含有するビスマス鉄酸化物粉体。ビスマス鉄酸化物からなる誘電体セラミックスにおいて、空間群Ｐｂａｍに分類される結晶構造を有するビスマス鉄酸化物結晶（Ｃ）が、ペロブスカイト型結晶構造を有するビスマス鉄酸化物結晶（Ａ）からなる結晶粒の粒界に存在する誘電体セラミックス。【選択図】図５
BISMUTH IRON OXIDE POWDER, METHOD FOR PRODUCING THE SAME, DIELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD AND ULTRASONIC MOTOR
PROBLEM TO BE SOLVED: To provide lead-free dielectric ceramic having a low leakage current and to provide a bismuth iron oxide powder as a raw material for the lead-free dielectric ceramic.SOLUTION: There is provided a bismuth iron oxide powder which is made of a bismuth iron oxide and comprises at least: particles (A) having a perovskite-type crystal structure; particles (B) having a crystal structure classified to the space group Pbam; and particles (C) classified to the space group I23. There is provided dielectric ceramic made of bismuth iron oxide, wherein bismuth iron oxide crystals (C) having a crystal structure classified to the space group Pbam are present at a grain boundary of crystal particles made of bismuth iron oxide crystals (A) having a perovskite-type crystal structure.SELECTED DRAWING: Figure 5
【課題】リーク電流値の低い非鉛誘電体セラミックスおよびその原料となるビスマス鉄酸化物粉体の提供。【解決手段】ビスマス鉄酸化物からなる、少なくとも（Ａ）ペロブスカイト型結晶構造を有する粒子、（Ｂ）空間群Ｐｂａｍに分類される結晶構造を有する粒子、および（Ｃ）空間群Ｉ２３に分類される粒子を含有するビスマス鉄酸化物粉体。ビスマス鉄酸化物からなる誘電体セラミックスにおいて、空間群Ｐｂａｍに分類される結晶構造を有するビスマス鉄酸化物結晶（Ｃ）が、ペロブスカイト型結晶構造を有するビスマス鉄酸化物結晶（Ａ）からなる結晶粒の粒界に存在する誘電体セラミックス。【選択図】図５
BISMUTH IRON OXIDE POWDER, METHOD FOR PRODUCING THE SAME, DIELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD AND ULTRASONIC MOTOR
ビスマス鉄酸化物粉体、その製造方法、誘電体セラミックス、圧電素子、液体吐出ヘッドおよび超音波モータ
YABUTA HISATO (author) / KUBOTA JUN (author) / SHIMADA MIKIO (author) / TAKASHIMA KENJI (author) / UCHIDA FUMIO (author) / MAEDA KENJI (author) / SHIMIZU CHIEMI (author)
2016-06-09
Patent
Electronic Resource
Japanese
| European Patent Office | 2015
| European Patent Office | 2017
European Patent Office | 2015
| European Patent Office | 2017
| European Patent Office | 2019