顶部籽晶法生长大尺寸、高品质钇铁石榴石晶体  

High Quality and Large Size Yttrium Iron Garnet Crystal Grown by Top Seeded Solution Growth Technique

作　　者：杨晓明 蓝江河[2,3] 魏占涛[3] 苏榕冰[1] 李阳[3] 王祖建 刘颖[1] 何超[1] 龙西法 YANG Xiaoming;LAN Jianghe;WEI Zhantao;SU Rongbing;LI Yang;WANG Zujian;LIU Ying;HE Chao;LONG Xifa(Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;Southwest Institute of Applied Magnetics,Mianyang 621000,China)

机构地区：[1]中国科学院福建物质结构研究所,福州350002 [2]电子科技大学电子科学与工程学院,成都610054 [3]西南应用磁学研究所,绵阳621000

出　　处：《无机材料学报》2023年第3期322-328,共7页Journal of Inorganic Materials

基　　金：National Natural Science Foundation of China(51902307,11974349,11904362,52172009,52102011)。

摘　　要：钇铁石榴石(Y_(3)Fe_(5)O_(12),YIG)晶体具有优异的磁学和磁光性质,在微波和磁光器件中有着广泛的应用。目前商用的磁光材料是采用液相外延技术在Gd_(3)Ga_(5)O_(12)(GGG)衬底上沉积的YIG单晶薄膜。本研究以无铅B_(2)O_(3)-BaF_(2)为复合助熔剂,采用顶部籽晶法技术(TSSG)生长YIG单晶材料,YIG晶体尺寸和重量分别可达43 mm×46 mm×11 mm和60 g。该晶体具有较窄的铁磁共振线宽(0.679 Oe)、高透明度(75%)和法拉第旋转角(200(°)·cm^(-1)@1310 nm,160(°)·cm^(-1)@1550 nm)等优异的综合性能,是微波和磁光器件的良好候选材料。更为重要的是,这种生长技术非常适合大尺寸YIG单晶或稀土掺杂YIG单晶,结合定向籽晶生长和提升工艺,可以显著降低生产成本。Yttrium iron garnet(Y_(3)Fe_(5)O_(12),YIG)crystals have been widely used in microwave and magneto-optic devices due to their excellent magnetic and magneto-optical properties.Currently,the commercial material is YIG single crystal thin films,which is deposited on Gd_(3)Ga_(5)O_(12)(GGG)substrate using liquid phase epitaxy technique.Herein,we report a new growth technology of YIG single crystal by top seeded solution growth(TSSG)technique from lead-free B_(2)O_(3)-BaF_(2) flux.The maximum size and weight of the as-grown YIG crystal can be up to 43 mm×46 mm×11 mm and 60 g,respectively.The crystals exhibit excellent comprehensive performances with narrow ferromagnetic resonance linewidth(0.679 Oe,1 Oe=250/πA/m),high transparency(75%)and Faraday rotation angle(200(°)·cm^(-1)@1310 nm and 160(°)·cm^(-1)@1550 nm),indicating a good candidate in microwave and magneto-optic devices.More significantly,this growth technique is ideally suited to large size YIG or doped-YIG single crystals ascombined with the oriented seed crystal and lifting process,which can significantly decrease the manufacture cost.

关 键 词：钇铁石榴石 单晶 顶部籽晶法 铁磁共振线宽 磁光效应 

分 类 号：TQ174[化学工程—陶瓷工业]