用固相反应法在La0.67Sr0.33MnO3中进行了Dy掺杂研究.结果发现,随着Dy掺入量的增加,样品的金属-绝缘体相变温度逐渐降低,对应的峰值电阻渐渐增大,居里温度下降,样品的磁电阻效应迅速增加,对Dy掺杂的作用可以用晶格效应来解释.
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