鋯鈦酸鉛，是一種無機化合物，化學式（0x1），通常縮寫為 PZT，是一種白色至灰白色固體。鋯鈦酸鉛是一種有明顯壓電效應的陶瓷鈣鈦礦材料，這意味著當施加電場時該化合物會改變形狀，被用於超聲波換能器、諧振器等。 鋯鈦酸鉛於 1952 年東京工業大學發現。與先前發現有明顯壓電效應的鈦酸鋇相比，鋯鈦酸鉛表現出更高靈敏度並具更好（較高）的工作溫度。陶瓷鋯鈦酸鉛因其物理強度、化學惰性、相對較低的製造成本而廣泛應用。陶瓷鋯鈦酸鉛是最常用的壓電陶瓷。最近幾年，許多國家立法限制商業產品使用鉛，因此不少人尋找鋯鈦酸鉛的替代品。 電陶瓷特性 Being piezoelectric lead zirconate titanate develops a voltage or potential difference across two of its faces when compressed useful for sensor applications and physically changes shape when an external electric field is applied useful for actuator applications The relative permittivity of lead zirconate titanate can range from 300 to 20000 depending upon orientation and doping Being pyroelectric this material develops a voltage difference across two of its faces under changing temperature conditions consequently lead zirconate titanate can be used as a heat sensor Lead zirconate titanate is also ferroelectric which means that it has a spontaneous electric polarization electric dipole that can be reversed in the presence of an electric field The material features an extremely large relative permittivity at the morphotropic phase boundary MPB near x 052 Some formulations are ohmic until at least after which current grows exponentially with field strength before reaching avalanche breakdown but lead zirconate titanate exhibits timedependent dielectric breakdown breakdown may occur under constantvoltage stress after minutes or hours depending on voltage and temperature so its dielectric strength depends on the time scale over which it is measured Other formulations have dielectric strengths measured in the range Uses thumb200pxLead zirconate titanate ultrasound transducer Lead zirconate titanatebased materials are components of ceramic capacitors and STMAFM actuators tubes Lead zirconate titanate is used to make ultrasound transducers and other sensors and actuators as well as highvalue ceramic capacitors and FRAM chips Lead zirconate titanate is also used in the manufacture of ceramic resonators for reference timing in electronic circuitry In 1975 Sandia National Laboratories created antiflash goggles featuring PLZT to protect aircrew from burns and blindness in case of a nuclear explosion The PLZT lenses could turn opaque in less than 150 microseconds Commercially it is usually not used in its pure form rather it is doped with either acceptors which create oxygen anion vacancies or donors which create metal cation vacancies and facilitate domain wall motion in the material In general acceptor doping creates hard lead zirconate titanate while donor doping creates soft lead zirconate titanate Hard and soft lead zirconate titanate generally differ in their piezoelectric constants Piezoelectric constants are proportional to the polarization or to the electrical field generated per unit of mechanical stress or alternatively is the mechanical strain produced by per unit of electric field applied In general soft lead zirconate titanate has a higher piezoelectric constant but larger losses in the material due to internal friction In hard lead zirconate titanate domain wall motion is pinned by the impurities thereby lowering the losses in the material but at the expense of a reduced piezoelectric constant Varieties One of the commonly studied chemical composition is The increased piezoelectric response and poling efficiency near to x 052 is due to the increased number of allowable domain states at the MPB At this boundary the 6 possible domain states from the tetragonal phase 100 and the 8 possible domain states from the rhombohedral phase 111 are equally favorable energetically thereby allowing a maximum 14 possible domain states Like structurally similar lead scandium tantalate and barium strontium titanate lead zirconate titanate can be used for manufacture of uncooled staring array infrared imaging sensors for thermographic cameras Both thin film usually obtained by chemical vapor deposition and bulk structures are used The formula of the material used usually approaches called lead zirconate titanate 3070 Its properties may be modified by doping it with lanthanum resulting in lanthanumdoped lead zirconium titanate lead zirconate titanate also called lead lanthanum zirconium titanate with formula Lead zirconate titanate 173070 另見 鈮酸鋰 （PVDF） 參考 外部連結 zirconate titanate5A 鋯鈦酸鉛材料特性 Category 鉛化合物