CAJ | 학술논문

文章通过水热法制备了Mn掺杂的Pb0．96 La0．04（Zr0．55 Ti0．45）0．99 O3陶瓷。X射线衍射分析发现Mn掺杂可以使PLZT由菱方相向四方相转变；扫描电子显微镜观察到陶瓷是晶粒均匀的致密结构，Mn掺杂会使晶粒变小；介电性能测试发现M n的掺入会增强陶瓷的弛豫特性；Vogel-Fulcher关系式拟合结果显示M n掺杂的PLZT具有类似自旋玻璃的极化行为；铁电分析表明Mn掺杂量的增加会使铁电畴的背向反转率和矫顽场分别增大和减少，同时伴有频率色散现象，可能与黏滞力的减小有关。
문장통과수열법제비료Mn참잡적Pb0．96 La0．04（Zr0．55 Ti0．45）0．99 O3도자。X사선연사분석발현Mn참잡가이사PLZT유릉방상향사방상전변；소묘전자현미경관찰도도자시정립균균적치밀결구，Mn참잡회사정립변소；개전성능측시발현M n적참입회증강도자적이예특성；Vogel-Fulcher관계식의합결과현시M n참잡적PLZT구유유사자선파리적겁화행위；철전분석표명Mn참잡량적증가회사철전주적배향반전솔화교완장분별증대화감소，동시반유빈솔색산현상，가능여점체력적감소유관。
Mn-doped Pb0.96La0.04(Zr0.55Ti0.45)0.99O3 ceramics were prepared by hydrothermal method .It is show n that the structure of PLZT changes from the rhombohedra to the tetragona with increasing of Mn content by X-ray diffraction(XRD) .Uniform grain distribution with compact structure is observed by scanning electron microscope(SEM) and the grain size is found to decrease with Mn doping .A die-lectric relaxation is observed in all the Mn-modified compositions and enhanced with Mn doping .The result of Vogel-Fulcher relation fitting indicates that the samples have the polarization behavior of spin glass .The ferroelectric analysis result shows that the backswitching and coercive field of the ferroe-lectric domain increase and decrease respectively with frequency dispersion as the Mn content increa-ses ,w hich is possibly due to the decrease of viscous force .