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首页> 外文期刊>Japanese journal of applied physics >Growth and Characterization of Ca_2Al_2SiO_7 Piezoelectric Single Crystals for High-Temperature Sensor Applications
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Growth and Characterization of Ca_2Al_2SiO_7 Piezoelectric Single Crystals for High-Temperature Sensor Applications

机译：高温传感器应用中Ca_2Al_2SiO_7压电单晶的生长与表征

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摘要

The electrical properties of a piezoelectric single crystal of calcium aluminate silicate Ca_2Al_2SiO_7 (CAS) were studied at elevated temperatures and its applicability to high-temperature pressure sensors was investigated. The CAS bulk single crystal was grown by the Czochralski method. The piezoelectric d_(14) and d_(36) constants were respectively evaluated as 6.04 and 4.04 pC/N by the resonance and antiresonance method. The temperature dependence of the piezoelectric constant was investigated at temperatures up to 500℃. The electrical resistivity at 800℃ was on the order of 10~8 Ω·cm along both the crystallographic a- and c-axes. The measurement of direct piezoelectric response at 700℃ demonstrated that the CAS crystal could detect a pseudo-combustion pressure change of an automobile engine. Our observations suggest that CAS crystals are superior candidates for sensing pressure at high temperatures.
机译：研究了高温下铝酸钙硅酸钙Ca_2Al_2SiO_7（CAS）的压电单晶的电学性质，并研究了其在高温压力传感器中的适用性。通过Czochralski方法生长CAS块状单晶。压电d_（14）和d_（36）常数通过共振法和反共振法分别评价为6.04和4.04pC / N。在高达500℃的温度下研究了压电常数的温度依赖性。沿晶体a轴和c轴，在800℃时的电阻率约为10〜8Ω·cm。 700℃下直接压电响应的测量表明，CAS晶体可以检测汽车发动机的假燃烧压力变化。我们的观察结果表明，CAS晶体是在高温下感应压力的最佳候选者。

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  • 来源
    《Japanese journal of applied physics》 |2013年第9issue2期|09KD03.1-09KD03.5|共5页
  • 作者

    Manabu Hagiwara; Hiroaki Noguchi; Takuya Hoshina; Hiroaki Takeda; Shinobu Fujihara; Nobuhiro Kodama; Takaaki Tsurumi;

  • 作者单位

    Department of Applied Chemistry, Keio University, Yokohama 223-8522, Japan;

    Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan;

    Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan;

    Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan;

    Department of Applied Chemistry, Keio University, Yokohama 223-8522, Japan;

    Department of Materials Science, Akita University, Akita 010-8502, Japan;

    Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan;

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