摘要:利用溶胶-凝胶法制备了BiFeO3、Bi0.95Sr0.05FeO3、BiFe0.95Co0.05O3和Bi0.95Sr0.05Fe0.95Co0.05O3样品,并对样品的结构、形态、元素含量、铁电性和铁磁性进行了研究。结果表明,共掺杂样品Bi0.95Sr0.05Fe0.95Co0.05O3的晶体结构发生了变化,铁电性明显增强,但漏电流变大;Bi0.95Sr0.05FeO3、BiFe0.95Co0.05O3样品的磁性都有所增强,但Bi0.95Sr0.05Fe0.95Co0.05O3样品的磁性并没有随着Sr和Co的共同掺杂而进一步提高,从氧空位浓度、Fe-O共价键结构的变化和晶体尺寸三个方面对产生这种现象的原因进行了分析。
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