Gd^(3+)和In^(3+)联合取代对石榴石铁氧体高功率低损耗特性的影响  

Effect of Gd^(3+)and In^(3+)substitutionon high-power and low-loss properties of garnet ferrites

作　　者：刘培元 倪鹤年 张凯 余忠 邬传健 孙科 李启帆 蒋晓娜 兰中文 LIU Pei-yuan;NI He-nian;ZHANG Kai;YU Zhong;WU Chuan-jian;SUN Ke;LI Qi-fan;JIANG Xiao-na;LAN Zhong-wen(Ruyuan Dongyangguang Magnetics Materials Co,Ltd,Shaoguan 512000,China;School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]乳源东阳光磁性材料有限公司,广东韶关512000 [2]电子科技大学材料与能源学院,四川成都610054

出　　处：《磁性材料及器件》2023年第6期24-29,共6页Journal of Magnetic Materials and Devices

摘　　要：采用传统陶瓷工艺制备Gd^(3+)和In^(3+)取代的钇铁石榴石铁氧体,研究Gd^(3+)和In^(3+)取代对材料显微结构、饱和磁化强度、铁磁共振线宽、自旋波线宽、电阻率等性能的影响。研究表明,Gd^(3+)取代24c位的Y^(3+),对样品显微结构、居里温度和电阻率无明显影响。随着Gd^(3+)取代量的增加,自旋波线宽从9.7 Oe提高到21.7 Oe。为了降低石榴石铁氧体损耗,采用适量的In^(3+)取代16a和24d位的Fe^(3+),铁磁共振线宽从198 Oe减小到95 Oe。此外,In^(3+)取代对石榴石铁氧体的电阻率、介电常数和介电损耗影响不大,使其保持良好的介电性能。Gd^(3+)and In^(3+)substituted yttrium iron garnet ferrites were prepared by traditional ceramic process.The effects of Gd^(3+)-In^(3+)substitutions on the microstructure,saturation magnetization,ferromagnetic resonance linewidth,spin wave linewidth,and resistance of the garnet ferrites were studied.The results show that the substitution of Gd^(3+)ions for Y^(3+)ions on 24c-site has no obvious effect on the microstructure,Curie temperature and resistivity.With the increase of Gd^(3+)substitution,the spin wave linewidth increases from 9.7 Oe to 21.7 Oe.In order to reduce the loss of garnet ferrites,an appropriate amount of In^(3+)ions are substituted for the Fe^(3+)ions on 16a-and 24d-site.The ferromagnetic resonance linewidth is reduced from 198 Oe to 95 Oe.In addition,the In^(3+)substitution has little effect on the resistivity,dielectric constant and dielectric loss of the garnet ferrites,maintaining excellent dielectric properties.

关 键 词：石榴石铁氧体 Gd^(3+)取代 In^(3+)取代 铁磁共振线宽 自旋波线宽 

分 类 号：TM277.3[一般工业技术—材料科学与工程]