使用固相反应法制备了Ca掺杂的多晶LuMnO3,其掺杂浓度为0≤x≤0.6,分别使用X射线衍射仪、拉曼散射仪以及物理性质测量系统对Lu1xCaxMnO3多晶样品的结构、拉曼振动模式以及磁性进行了测量与分析.实验结果表明:当Ca掺杂含量x=0时,样品的结构为纯的六方相;随着x的增大,样品的结构逐渐从六方相向正交相转变;当x=0.5、0.6时,样品的六方相结构完全转变成纯的正交相.此外,样品的磁化强度在x=0.4时达到最大值,其原因是样品Mn3+与Mn4+之间的双交换作用在x=0.4处达到了峰值,使样品的铁磁性达到最强.
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