摘要
选用氧化铋为助溶剂、氧化铁和稀土氧化物为溶质,以掺杂钆镓石榴石(SGGG)晶片为衬底,采用无铅液相外延(LPE)法成功制备了厚度为1 140μm的Bi掺杂Re_(3)Fe_(5)O_(12)(Bi∶RIG)单晶薄膜,并对薄膜的结构和相关性能进行了分析研究。单晶X射线衍射分析结果表明,制备的薄膜为单一的单晶石榴石相结构,结晶质量较高;扫描电子显微镜观察到薄膜表面光滑均匀,没有明显的裂纹及缺陷,并与衬底结合紧密;红外光谱测试表明,薄膜在应用波段1 310~1 550 nm的透过率接近70%;磁性测量结果表明,该薄膜呈现典型的软磁材料的磁滞回线特征,具有较小的饱和磁化强度;磁光性能结果显示,薄膜在1 310和1 550 nm波长的维尔德常数分别为16 841和11 993 rad/(T·m)。研究结果表明,采用LPE法制备的薄膜具备优异的性能,有望在光通信中用于法拉第光隔离器件。
Bi-doped Re_(3)Fe_(5)O_(12)(RIG)single crystal films with a thickness of 1140μm were successfully prepared by a leadfree liquid-phase epitaxy(LPE)method using bismuth oxide as solvent,iron oxide and rare-earth oxides as solute,and gadolinium-gallium-doped garnet(SGGG)wafers as epitaxial substrate.The structure and related properties of the films were studied.The result of single crystal X-ray diffraction analysis shows that the prepared film is of a single crystal garnet-phase structure with high crystallization quality.Scanning electron microscopy observation reveals that the surface of film is smooth and uniform,without any obvious cracks or defects,and it is tightly bonded to the substrate.Infrared spectroscopy tests demonstrate that the transmittance of film is close to 70%in the application bands from 1310 nm to 1550 nm.Magnetic measurement results indicate that the film exhibits a typical soft-magnetic material hysteresis loop characteristics and has a relatively small saturation magnetization.Magneto-optical tests in the home-made platform show that the Verdet constants of film are 16841 and 11993 rad(/T·m)at wavelengths of 1310 and 1550 nm,respectively.This study results indicate that the films prepared by LPE method possess excellent properties,expected to be used in Faraday optical isolator in optical communication.
作者
李祥
庞俊
王茗
罗毅
龚瑞
赵建华
于杰
LI Xiang;PANG Jun;WANG Ming;LUO Yi;GONG Rui;ZHAO Jianhua;YU Jie(Guangxi Key Laboratory of Optical and Electronic Materials and Devices,College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China;Anhui Crystro Crystal Materials Co.,Ltd.,Hefei 230061,China;Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)
出处
《人工晶体学报》
北大核心
2025年第9期1600-1606,共7页
Journal of Synthetic Crystals
基金
广西科技计划项目(桂科AD25069100)
广西光电材料与器件重点实验室自主研究课题。
关键词
石榴石单晶
Bi掺杂
无铅液相外延法
磁光薄膜
法拉第光隔离器
garnet single crystal
Bi doping
lead-free liquid-phase epitaxy method
magneto-optical film
Faraday optical isolator
