Structure, Magnetic Properties and Defects Distribution of Mn0.5Zn0.5LaxFe2-xO4 Nanocrystals

摘要：

　　La-substitution Mn-Zn ferrite nanocrystals,Mn0.5Zn0.5LaxFe2-xO4 (x=0.00,0.05,0.10,0.15,0.20) were prepared by sol-gel process.X-ray diffraction (XRD),vibrating sample magnetometer (VSM)and positron annihilation lifetime spectroscopy (PALS) studies were carried out.The result of XRD suggests that the mean grain size decreases from 63.8 nm to 44.6 nm with the increment of La-substitution concentration from x=0.00 to 0.20.The VSM measurement shows that the saturation magnetization (MS)increases in the range of x<0.10,then it drastically decreases in the range of 0.10<x<0.20.At last,defects property is discussed using PALS.

关键词： Mn-Zn ferrite Defects Positron annihilation

作者: Wang Liqun

作者单位: College of Physics and Electronic information Science, Tianjin Normal University, Tianjin 300387,China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 706-708

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）