以硝酸钡、硝酸锶、钛酸四丁脂、硝酸铜、硝酸镧以及氨水为原料,利用柠檬酸-硝酸盐燃烧法制备了Ba0.5Sr0 5TiO3(BST)、1mol%Cu2+掺杂BST、1mol%La3+掺杂BST,以及0.5mol%Cu2+和0.5mol%La3+共掺杂BST粉末.利用脉冲电流(简称PECS)烧结设备烧结所制备的粉体,结果发现掺杂可以大大改善BST陶瓷晶粒大小的均匀性.介电性能测试结果表明1mol%Cu2+掺杂不仅降低了BST的介电损耗,同时也降低了介电常数,而1mol%La3+掺杂,以及0.5mol%Cu2+和0.5mol%La3+共掺杂降低了BST的介电损耗,但在25℃附近介电常数升高.
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