通过对M～T曲线、M～H曲线和P～T曲线的测量,研究了Bi0.5Ca0.5Mn1-xCrxO3(O≤x≤0.12)系列样品的磁性和电输运特性.结果表明,随Cr掺杂量的增加,反铁磁转变和电荷有序转变分别在x～0.03和x～0.12相继消失.低温下始终出现自旋玻璃或团簇玻璃行为,说明存在反铁磁与铁磁的相互竞争.对电阻率数据的拟合表明,所有组分载流子的电输运可用可变程跃迁描述.我们用相分离的图象解释了相关现象.
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