【摘要】 采用传统固相反应法制备(16-x)CaO-xMgO-9Li2O-12Sm2O3-63TiO2(1≤x≤16,简写为CMLST-x)陶瓷,用X-射线衍射(XRD)和扫描电镜研究其晶体结构及微观形貌。在高频下,CMLST-x陶瓷随MgO取代量从1增大到16,介电常数rε从112.1降为38.6。且在取代量x=12时,rε=42.6,介电损耗最小值为0.001 2。更多还原

【Abstract】 (16-x)CaO-xMgO-9Li₂O-12Sm₂O₃-63TiO₂（abbreviated as CMLST-x） based dielectric ceramic with different MgO content（1≤x≤16）,were prepared by a conventional solid reaction method.The crystalline structure and morphology were studied by XRD and SEM,respectively.The effects of substitution on the structures and the dielectric characteristics of the CMLSTx ceramics were discussed.As the MgO content increases from 1 to 16,the dielectric constant of CMLSTx ceramics decreases from 112.1 to 38.6,while the material shows the minimum tan δ value of 0.001 2 for x=12,ε_r=42.6.更多还原