CAJ | 학술논문

采用固相反应法通过施受主共掺的方式制备Ba0．98Bi0．02（Ti0．9Zr0．1）1-xCoxO3（x＝0．005，0．01，0．015，0．02）陶瓷，通过XRD和LCR表征样品的相结构和介电性能。结果表明：在所掺杂溶度范围内，陶瓷样品未出现第二相；x＝0．02时样品仅表现出弥散相变铁电体的特征，晶体中缺陷偶极子以[ Bi·Ba -Co′Ti/Zr ]为主，晶体中缺陷偶极子的存在形式与介电弛豫程度相关；样品结晶化学特性说明B位离子键价与其介电常数存在反比例关系。
채용고상반응법통과시수주공참적방식제비Ba0．98Bi0．02（Ti0．9Zr0．1）1-xCoxO3（x＝0．005，0．01，0．015，0．02）도자，통과XRD화LCR표정양품적상결구화개전성능。결과표명：재소참잡용도범위내，도자양품미출현제이상；x＝0．02시양품부표현출미산상변철전체적특정，정체중결함우겁자이[ Bi·Ba -Co′Ti/Zr ]위주，정체중결함우겁자적존재형식여개전이예정도상관；양품결정화학특성설명B위리자건개여기개전상수존재반비례관계。
Ba0.98Bi0.02(Ti0.9Zr0.1)1-xCoxO3(x=0.00,0.005,0.015,0.02)ceramics were prepared by a solid phase reaction .The microstructure and dielectric properties of the ceramics were investigated by XRD and LCR .The results showed that the second phase didn’t occur in doping range;when x=0.02, the ceramic was diffuse ferroelectrics .The dominant defect dipoles was [2Bi·Ba-Vo″], [Bi·Ba -Co′Ti/Zr] in crystal.The varieties of defect dipoles made a significant influence on dielectric relaxion .According to crystal chemistry results,it was concluded that the bond valance sum was inversely proportional to the dielectric constants .