Structure and magnetic properties of NiCuZn ferrite materials with La doping

• Published in: Rare metals Vol. 36; no. 3; pp. 202 - 204
• Main Authors: Li, Yuan-Xun, Li, Jie, Li, Qiang, Yu, Guo-Liang, Zhang, Huai-Wu
• Format: Journal Article
• Language: English
• Published: Beijing Nonferrous Metals Society of China 01.03.2017; Springer Nature B.V
• Subjects: Biomaterials; Chemistry and Materials Science; Doping; Energy; Ferrite; Ferrites; Frequency filters; Grain size; LaFeO3; La掺杂; Magnetic permeability; Magnetic properties; Magnetic saturation; Materials Engineering; Materials Science; Metallic Materials; Nanoscale Science and Technology; NiCuZn铁氧体; Permeability; Physical Chemistry; Polyvinyl alcohol; Saturation (magnetic); Scanning electron microscopy; Solid phases; Tangents; Trends; 微观结构; 扫描电子显微镜; 磁性能; 铁氧体材料; 饱和磁化强度; Properties; NiCuZn ferrite; La doping
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-014-0376-2

Ni0.3Cu0.07Zn0.63Fe2-xLaxO4 ferrites were prepared by solid phase method and sintered at 1,150 ℃ for 6 h.The phase formation,microstructure,and magnetic properties of samples were investigated.With doping of La3＋,the samples contain two phases：LaFeO3 and NiCuZn ferrites.Scanning electron microscope （SEM） image shows that La doping constrains the growth of NiCuZn ferrite,which is more uniform.La doping improves magnetic properties of NiCuZn ferrite when x ≤ 0.03.The saturation magnetization （Ms） increases first;when x =0.03,the highest value is 75.35 A.m2.kg-1.The permeability increases to the maximum value with frequency and then decreases with the concentration of La3＋ increasing.When x =0.03,the maximum value of real permeability at 1 MHz is 333.5,and the loss angle tangent （tanδ） is not more than 0.02.La doping improves the properties of NiCuZn ferrite,which can be applied to low-frequency filters.