CAJ | 학술논문

用软化学法合成了驰豫型复合钙钛矿结构铁电PMNT粉体，并将制备好的粉体压制成圆片状后放入硅碳棒炉中，于1150℃下烧结成致密热释电陶瓷材料．然后用x射线粉末衍射对合成材料进行物相分析，并用扫描电镜观察了晶粒形貌特征．结果表明：烧结后的陶瓷具有很好的致密性和热释电性，其中，0．67PMN．0．33PT组分热释电陶瓷的热释电系数为4．5×10^-4C·m^-2．K^-1，探测优值Fd为3．9×10^-5Pa^-1/2。
용연화학법합성료치예형복합개태광결구철전PMNT분체，병장제비호적분체압제성원편상후방입규탄봉로중，우1150℃하소결성치밀열석전도자재료．연후용x사선분말연사대합성재료진행물상분석，병용소묘전경관찰료정립형모특정．결과표명：소결후적도자구유흔호적치밀성화열석전성，기중，0．67PMN．0．33PT조분열석전도자적열석전계수위4．5×10^-4C·m^-2．K^-1，탐측우치Fd위3．9×10^-5Pa^-1/2。
The PMNT ceramics with complex perovskite structure were prepared by the soft chemistry method. X-ray diffraction was used to detect the perovskite phase evolution and the presence of the pyrochlore phase in PMNT ceramics. The grain morphology was observed by scanning electron microscopy （SEM）. The pyroelectric and piezoelectric properties of the ceramics were studied. The results show that the PMNT ceramics posses high densities and good pyroelectric properties. The pyroelectric coefficient of 0.67PMN-0.33PT ceramics is 5.5×10^-4C·m^-2.K^-1, Fd is 3.9× 10^-5 Pa^-1/2.