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    Low polarizability of Sb5+ for use in fabrication of low dielectric constant materials
    2.
    发明授权
    Low polarizability of Sb5+ for use in fabrication of low dielectric constant materials 失效
    Sb5 +的低极化率用于低介电常数材料的制造

    公开(公告)号：US06183715B2

    公开(公告)日：2001-02-06

    申请号：US09069794

    申请日：1998-04-30

    申请人： Steven C. Tidrow ,  Arthur Tauber ,  William D. Wilber ,  Robert D. Finnegan

    发明人： Steven C. Tidrow ,  Arthur Tauber ,  William D. Wilber ,  Robert D. Finnegan

    IPC分类号： C01G3002

    CPC分类号： H01P3/08 ,  C01G30/026 ,  C01P2002/34 ,  C01P2002/77

    摘要： The microwave properties of numerous perovskite antimonates like A2MeSbO6 where A=Ba or Sr, Me=a rare earth, Y, Sc, Ga, or In and A4MeSb3O12 where A=Ba or Sr and M=Li, Na or K were measured at 10 Ghz and 300 K. Using the microwave properties and lattice parameters of these materials, the Clausius-Mossotti relationship and a nonlinear regression fitting program, the polarizability of Sb5+ was investigated and determined to be 1.18±0.49 A3. This low polarizability and the low loss of antimonates in general indicate that Sb5+ is an excellent candidate for use as a constituent in the fabrication of low dielectric constant, low loss, lattice matching perovskite oxide microwave substrates.

    摘要翻译： 其中A = Ba或Sr，Me =稀土，Y，Sc，Ga或In和A4MeSb3O12的许多钙钛矿锑酸盐如A2MeSbO6的微波特性，其中A = Ba或Sr和M = Li，Na或K在10 Ghz和300K。使用这些材料的微波特性和晶格参数，克劳修斯 - 莫索蒂关系和非线性回归拟合程序，研究了Sb5 +的极化率，并确定为1.18±0.49 A3。 这种低的极化率和低的锑酸盐损失一般表明Sb5 +是制造低介电常数，低损耗，晶格匹配的钙钛矿氧化物微波衬底中的组成成分的极好候选物。

    PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS COMPOSITION AND DISPLACEMENT GENERATING DEVICE
    8.
    发明申请
    PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS COMPOSITION AND DISPLACEMENT GENERATING DEVICE 有权
    压电/静电陶瓷组合物和位移产生装置

    公开(公告)号：US20140167562A1

    公开(公告)日：2014-06-19

    申请号：US14189023

    申请日：2014-02-25

    申请人： NGK Insulators, Ltd.

    发明人： Tomohiko HIBINO

    IPC分类号： H01L41/083 ,  H01L41/187

    CPC分类号： H01L41/1876 ,  C01G25/006 ,  C01G30/026 ,  C01P2006/40 ,  C04B35/493 ,  C04B35/62645 ,  C04B35/62685 ,  C04B2235/3224 ,  C04B2235/3241 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3284 ,  C04B2235/3294 ,  C04B2235/768 ,  C04B2235/85 ,  H01L41/083 ,  H01L41/0926 ,  H01L41/43

    摘要： Provided is piezoelectric/electrostrictive body generating large electric-field-induced strain, and having high durability with respect to an electric field having a direction opposite to a polarization direction. A composition of piezoelectric/electrostrictive ceramics is represented by a general formula Pba{ZnbSbc(ZrdTi1-d)1-b-c}O3. As for a, b, c, and d, 0.985≦a≦0.998, 0.010≦b≦0.040, 0.025≦c≦0.090, 0.460≦d≦0.510, and 2.125≦c/b≦3.000 are satisfied. An accessory component containing at least one element selected from the group consisting of Mn, Cr, Fe, and a rare-earth element may be added to a main component. An additive amount of the at least one element relative to 100 parts by weight of the main component is 0.3 parts by weight or less in terms of an oxide.

    摘要翻译： 提供了产生大的电场诱发应变的压电/电致伸缩体，并且相对于具有与偏振方向相反的方向的电场具有高耐久性。 压电/电致伸缩陶瓷的组成由通式Pba {ZnbSbc（ZrdTi1-d）1-b-c} O3表示。 对于a，b，c和d，0.985＆nlE; a＆nlE; 0.998,0.010＆nlE; b＆nlE; 0.040,0.025＆nlE; c＆nlE; 0.090,0.460＆nlE; d＆nlE; 0.510和2.125＆nlE; c / b＆ 。 含有选自Mn，Cr，Fe和稀土类元素中的至少一种元素的附属成分可以添加到主成分中。 相对于主成分100重量份，至少一种元素的添加量相对于氧化物为0.3重量份以下。

    Process for preparing fine powder of perovskite-type compound
    10.
    发明授权
    Process for preparing fine powder of perovskite-type compound 失效
    钙钛矿型化合物细粉的制备方法

    公开(公告)号：US5445806A

    公开(公告)日：1995-08-29

    申请号：US845670

    申请日：1992-03-04

    申请人： Masanori Kinugasa ,  Naoto Tsubomoto ,  Osamu Kobayashi

    发明人： Masanori Kinugasa ,  Naoto Tsubomoto ,  Osamu Kobayashi

    IPC分类号： C01B13/36 ,  C01G23/00 ,  C01G25/00 ,  C01G30/00 ,  C01G30/02 ,  C01G33/00 ,  C01G49/00 ,  C01F5/00 ,  C01F11/00

    CPC分类号： C01G33/00 ,  C01B13/363 ,  C01G23/003 ,  C01G23/006 ,  C01G25/006 ,  C01G30/00 ,  C01G30/026 ,  C01G49/009 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2004/03 ,  C01P2004/52 ,  C01P2004/62 ,  C01P2006/32 ,  C01P2006/80

    摘要： A process for preparing a fine powder of perovskite-type compounds having an average particle size of at most 0.3 .mu.m and uniform particle sizes, which comprises subjecting to a reaction an aqueous solution of a mixture of at least one compound selected from group A element compounds comprising alkaline earth metal elements and/or bivalent metal elements with at least one compound selected from group B element compounds comprising tetravalent metal elements such as Ti, Zr, Hf and Sn and/or composite metal elements composed of a bivalent or trivalent metal element such as Zn, Ni, Co, Mg, Fe or Sb and a pentavalent metal element such as Nb or Sb in an A/B atomic ratio of more than 1, calcining the resulting powdery reaction product at a temperature which is lower than the temperature at which the growth of particles takes place and which is higher than the temperature at which the growth of particles takes place when A/B is 1, and cleaning the calcined product with an acid solution to remove the excess group A elements. The process provides fine powders of perovskite-type compounds having a good crystallinity, particularly tetragonal barium titanate, which are useful particularly as raw materials of ceramics for electronic devices.

    摘要翻译： 一种平均粒径为0.3μm以上且平均粒径的钙钛矿型化合物的微细粉末的制造方法，其特征在于，将至少一种选自A族元素的化合物的混合物的水溶液 包含碱土金属元素和/或二价金属元素的化合物与至少一种选自包含四价金属元素如Ti，Zr，Hf和Sn的B族元素化合物和/或由二价或三价金属元素组成的复合金属元素 例如Zn，Ni，Co，Mg，Fe或Sb以及A / B原子比大于1的Nb或Sb的五价金属元素，在低于温度的温度下煅烧所得粉末状反应产物 当A / B为1时，发生颗粒的生长并且高于发生颗粒生长的温度，并且用酸溶液将煅烧产物清洗成r 排除多余的A组元素。 该方法提供具有良好结晶度的钙钛矿型化合物的细粉末，特别是四方晶系钛酸钡，其特别用作电子器件用陶瓷的原料。