The Growth and Magneto-optical Properties of Large Size Single-crystal Thick TmBiIG Films from Lead-free Flux by LPE Technology
In this paper, we prepared the 3-inch magneto-optical (MO) single crystal garnet film with the composition of (TmBi)3(FeGa)5O12 by Liquid phase epitaxy (LPE) from lead-free flux. The MOgarnet films are grown on Gd3Ga5O12 (GGG (111)) substrate because of the good lattice match between the film and the substrate. In our experiment, we choose the Bi2O3 as the fluxing agent not frequently-used PbO because the latter is poisonous and brings negative impact to the growth film. The good films with low defects, mirror surface, high Faraday Rotation angle(FR) and big thickness have been obtained by optimizing the flux ratio and LPE technological parameters. The thickness of the film can reach about 5060 micrometers in 3-inch GGG substrate. The optimal growth rate is 0.85 . . . 0.95 μm/min, and mismatch between TmBiIG film and GGG substrate gets its smallest and good magnetic and MO properties have been obtained with this growth rated. The biggest FR is 0.54 degree/μm as the external magnetic field is as small as 25 Oe. The Ms and Hc of TmBiIG film reaches its biggest and smallest value as the growth rate is 0.92 μm/min, respectively, and the value is 50 emu/cm3 and 5 Oe.
Bing Mei Huai-Wu Zhang Qing-Hui Yang Shu-Chen Jin Xiao-Jie Tian Ying-Heng Rao
State Key Laboratory of Electronic Films and Integrated Devices University of Electronic Science and Technology, Chengdu 610054, China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
2035-2040
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）