【摘要】 ＢａＯ－Ｎｄ２Ｏ３－ＴｉＯ２系富钛区含Ｌａ或Ｓｍ的陶瓷，ＸＲＤ、ＳＥＭ显微结构分析表明，其主晶相为Ｒ（Ｒ＝Ｌａ或Ｓｍ）取代Ｎｄ固溶体ＢａＮｄ２－ｙＲｙＴｉ５Ｏ１４和ＢａＮｄ２－ｙＲｙＴｉ４Ｏ１２，均属斜方晶系，并存在少量的次晶相Ｒ２Ｔｉ２Ｏ７、ＢａＴｉ４Ｏ９、Ｂａ２Ｔｉ９Ｏ２０等。富钛区ＢａＮｄ２Ｔｉ４＋ｘＯ１２＋２ｘ（ｘ＝０～１．４００）组分和含Ｌａ或Ｓｍ的ＢａＮｄ２－ｙＲｙＴｉ５Ｏ１４组分所组成的瓷料，介质损耗显著地降低，介电常数和电容温度系数遵从李赫涅德凯对数混合定律。更多还原

【Abstract】 The ceramics of BaO Nd 2O 3 TiO 2 containing La or Sm, is examined with XRD and SEM. The analysis results show that in the host crystalline phase is BaNd 2 y R y Ti 5O 14 or BaNd 2 y R y Ti 4O 12 (R st ands for La or S m), both belong to rhombic system, and the subordinate crystalline phase is R 2Ti 2O 7, Ba 2Ti 4O 9, Ba 2Ti 9O 20 , etc. The dielectric loss is much lower and the dielectric constant and TCC are in accordance with the multiphase mixture logarithm law. (8 refs.)更多还原