通过引入Cu元素掺杂,利用多元醇还原法在340℃条件下一步制备出L10相(FePt)1-xCux纳米颗粒.实验研究了不同比例Cu掺杂对FePt颗粒形貌、结构及磁性能的影响.X射线衍射结果表明,在未掺杂Cu元素时,FePt颗粒为fcc结构.随着Cu元素的引入,样品逐渐呈现出fct结构的衍射峰,同时出现单质Cu的衍射峰.透射电子显微镜显示Cu掺杂导致制备的纳米颗粒有所长大、颗粒的尺寸分布变宽.磁性测量结果表明,当反应前驱体中Cu的比例为25.9％时,其矫顽力达到约1300 Oe.研究显示Cu掺杂对于FePt颗粒在低温下的相变具有一定促进作用.
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