【作者】 武迎春； 刘先松； 黄凯； 牛晓飞； 吕法瑞； 冯双久； 江帅；

【Author】 Wu Yingchun;Liu Xiansong;Huang Kai;Niu Xiaofei;Feng Shuangjiu;Lv Farui;Jiang Shuai;Engineering Technology Research Center of Magnetic Materials,School of Physics & Materials Science,Anhui University;

【机构】 安徽大学物理与材料科学学院,磁性材料安徽省工程技术研究中心；

【摘要】 采用陶瓷法,制备了M型铁氧体Sr_0.72Ca_0.08La_0.20Fe_11.85Co_0.15-xCu_xO₁₉（0≤x≤0.15）样品。利用XRD、SEM、VSM、B-H永磁测量分析仪,研究了样品的微观形貌、晶体结构及磁性能。当烧结温度为1270℃C,且Co的含量在0.03≤x≤0.09范围内时,显示样品皆由单一的M相组成且形成了均匀的六角形结构。利用VSM和永磁材料测试仪测量了样品的磁性能,结果表明样品的剩余饱和磁化强度（B_r）、矫顽力（H_c）和最大磁能积[（BH）_max]随着钴含量增大出现了先增大后减小的变化趋势。更多还原

【Abstract】 M-type permanent magnetic ferrites Sr_0.72Ca_0.08La_0.20Fe₁₁₈₅Co_0.05-xCu_xO₁₉（0≤x≤0.15）were prepared by the ceramic process.The phase composition,micro-morphology,and magnetic properties of the particles and magnets were investigated by XRD,SEM,VSM and a B-H permanent magnetic measurement analyzer.At 1270 ℃,and the content of Co ranging from 0.03 to 0.09,the single M phase was composed and the uniform hexagonal structure was formed.Magnetic properties of the samples were investigated via vibrating sample magnetometer（VSM）and B-H permanent magnetic measurement analyzer,results show the remanence（B_r）,coercivity（H_c）,maximum energy product[（BH）_max]increase first and then decreases with increasing cobalt content（x）.更多还原