人工晶体学报2025，Vol.54Issue(4)：543-552,10.DOI:10.16553/j.cnki.issn1000-985x.2024.0233
Ca2+/Mg2+/Zr4+不同化学计量比掺杂钆镓石榴石的性能
Properties of Gadolinium Gallium Garnet Substituded with Different Stoichiometric Ratios of Ca2+/Mg2+/Zr4+
摘要
Abstract
Substituted gadolinium gallium garnet(SGGG)crystal is an important substrate material for liquid-phase epitaxial growth of magneto-optical single crystal thin films.SGGG crystals with uniform structure and stable physical properties are the basis for the preparation of magneto-optical single crystal thin films.This article reports the preparation of four different Ca2+/Mg2+/Zr4+doped gadolinium gallium garnet crystals using the Czochralski method.The X-ray rocking curve test shows that the prepared crystals are high crystallinity without twinning,and full width at half maximum(FWHM)is 2.04',2.07',1.85',1.98',respectively,the lattice constant is 12.440 4～12.481 8 Å.The number of dislocation density is 53～161 cm-2.The surface roughness of crystal surface(111)measured by atomic force microscopy(AFM)ranges from 0.123 nm to 0.244 nm.The thermal expansion coefficient of the crystal is 8.27 × 10-6～8.64×10-6.The crystal has good transmittance in the wavelength range of 500～2 500 nm.SGGG crystals prepared by adjusting the doping amount of Ca2+/Mg2+/Zr4+can meet the performance requirements of substrate materials for epitaxial growth of magneto-optical single crystal thin films.关键词
钆镓石榴石/钙镁锆掺杂/磁光晶体/衬底材料/提拉法Key words
gadolinium gallium garnet/calcium magnesium zirconium doping/magneto-optic single crystal/substrate material/Czochralski method引用本文复制引用
邵梅方,冯晋阳,侯田江,马晓..Ca2+/Mg2+/Zr4+不同化学计量比掺杂钆镓石榴石的性能[J].人工晶体学报,2025,54(4):543-552,10.基金项目
湖北省先进材料领域重点研发计划(2020BAB061) （2020BAB061）
