微量Co^(2+)-Si^(4+)取代对多晶石榴石铁氧体材料旋矩磁性能的影响  

Effects of trace amounts of Co^(2+)-Si^(4+)combined substitution on the gyromagnetic and rectangular loop properties of polycrystalline garnet microwave ferrite

作　　者：王文鑫 翁兆平 徐茂忠 WANG Wen-xin;WEN Zhao-pin;XU Mao-zhong(Nanjing Guorui Microwave Devices Co,Ltd,Nanjing 210061,China)

机构地区：[1]南京国睿微波器件有限公司,江苏南京210061

出　　处：《磁性材料及器件》2024年第5期12-15,共4页Journal of Magnetic Materials and Devices

摘　　要：采用传统陶瓷工艺制备了多晶石榴石铁氧体,研究了微量Co^(2+)-Si^(4+)联合取代对GdCaSnV-YIG、GdCaZrV-YIG、GdCaInV-YIG和GdAl-YIG材料旋矩磁性能的影响。结果表明,Co^(2+)-Si^(4+)联合取代GdAl-YIG可使其矫顽力显著增高,而Co^(2+)-Si^(4+)取代GdCaSnV-YIG、GdCaZrV-YIG和GdCaInV-YIG,可调节其矫顽力和剩磁比。当Co^(2+)-Si^(4+)取代量为0.015时得到GdCaSnV-YIG的矫顽力为0.17 Oe,取代量为0.025时得到GdCaZrV-YIG的矫顽力为0.23 Oe,取代量大于等于0.035时三者的剩磁比均能达到0.79或以上。Polycrystalline samples of yttrium iron garnet(YIG)were prepared by conventional technique.The effect of trace amounts of Co^(2+)-Si^(4+)combined substitution on the electromagnetic and square-loop properties of GdCaSnV-YIG,GdCaZrV-YIG,GdCaInV-YIG and GdAl-YIG materials was studied.The results show that coercivity of Co^(2+)-Si^(4+)substituted GdAl-YIG increases significantly,while for Co^(2+)-Si^(4+)substituted GdCaSnV-YIG,GdCaZrV-YIG and GdCaInV-YIG,can regulate their coercivity and remanent magnetisation ratio.The coercivity 0.17 Oe of GdCaSnV-YIG is obtained when the Co^(2+)-Si^(4+)substitution is 0.015,the coercivity 0.23 Oe of GdCaZrV-YIG is obtained when the substitution is 0.025,and the remanent magnetisation ratios of all the three samples reach 0.79 or more when the substitution is greater than or equal to 0.035.

关 键 词：石榴石铁氧体 Co^(2+)-Si^(4+)取代 旋矩磁材料 剩磁比 

分 类 号：TM277.3[一般工业技术—材料科学与工程]