无机材料学报 ›› 2023, Vol. 38 ›› Issue (3): 322-328.DOI: 10.15541/jim20220353

• 研究快报 • 上一篇    下一篇

顶部籽晶法生长大尺寸、高品质钇铁石榴石晶体

杨晓明1(), 蓝江河2,3(), 魏占涛3, 苏榕冰1, 李阳3, 王祖建1, 刘颖1, 何超1, 龙西法1()   

  1. 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
  • 收稿日期:2022-06-24 修回日期:2022-08-14 出版日期:2022-10-25 网络出版日期:2022-10-25
  • 通讯作者: 蓝江河, 高级工程师. E-mail: lanjh418915@sina.com;
    龙西法, 研究员. E-mail: lxf@fjirsm.ac.cn
  • 作者简介:杨晓明(1990-), 男, 副研究员. E-mail: xmyang@fjirsm.ac.cn

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

YANG Xiaoming1(), LAN Jianghe2,3(), WEI Zhantao3, SU Rongbing1, LI Yang3, WANG Zujian1, LIU Ying1, HE Chao1, LONG Xifa1()   

  1. 1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
    2. School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
    3. Southwest Institute of Applied Magnetics, Mianyang 621000, China
  • Received:2022-06-24 Revised:2022-08-14 Published:2022-10-25 Online:2022-10-25
  • Contact: LAN Jianghe, senior engineer. E-mail: lanjh418915@sina.com;
    LONG Xifa, professor. E-mail: lxf@fjirsm.ac.cn
  • About author:YANG Xiaoming (1990-), male, associate professor. E-mail: xmyang@fjirsm.ac.cn
  • Supported by:
    National Natural Science Foundation of China(51902307);National Natural Science Foundation of China(11974349);National Natural Science Foundation of China(11904362);National Natural Science Foundation of China(52172009);National Natural Science Foundation of China(52102011)

摘要:

钇铁石榴石(Y3Fe5O12, 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Gd3Ga5O12(GGG)衬底上沉积的YIG单晶薄膜。本研究以无铅B2O3-BaF2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。

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

Abstract:

Yttrium iron garnet (Y3Fe5O12, 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 Gd3Ga5O12 (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 B2O3-BaF2 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/π A/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.

Key words: yttrium iron garnet, single crystal, TSSG method, ferromagnetic resonance linewidth, magneto-optic effect

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