烧结温度对La0.9Sr0.1MnO3/Fe2O3体系结构和磁性的影响Influence of sinter temperature on structure and magnetization of the composite system La0.9Sr0.1MnO3/ Fe2O3
刘力虎,唐贵德,严振庄,张变芳,申俊杰
摘要(Abstract)：
采用软化学方法制备了纳米材料La0.9Sr0.1MnO3和软磁材料γ-Fe2O3,并将两者按不同比例进行复合,而后在不同温度下对其进行烧结,分别用扫描电子显微镜和X射线技术观察了样品的形貌特征和相结构,并用振动样品磁强计对烧结后的样品磁性进行测量。结果表明,经高温烧结后的复合体系,组成物质间没有发生反应,仍以各自相独立存在;复合体系剩磁Br及饱和磁化强度随烧结温度的升高而增加。烧结温度对样品晶粒和尺寸的影响是导致矫顽力Hc的变化的直接原因。
关键词(KeyWords)： 溶胶-凝胶法;烧结;复合体系
基金项目(Foundation): 国家自然科学基金(10074013);; 河北省教育厅科研基金(2005358);; 河北师范大学青年基金(L2005Q04)
作者(Author): 刘力虎,唐贵德,严振庄,张变芳,申俊杰
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