Lattice damage assessment and optical waveguide properties in LaAlO3 single crystal irradiated with swift Si ions
Liu, Y; Crespillo, ML; Huang, Q; Wang, TJ; Liu, P; Wang, XL
2017
发表期刊JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN0022-3727
卷号50期号:5页码:-
文章类型期刊论文
摘要As one of the representative ABO(3) perovskite-structured oxides, lanthanum aluminate (LaAlO3) crystal has emerged as one of the most valuable functional-materials, and has attracted plenty of fundamental research and promising applications in recent years. Electronic, magnetic, optical and other properties of LaAlO3 strongly depend on its crystal structure, which could be strongly modified owing to the nuclear or electronic energy loss deposited in an ion irradiation environment and, therefore, significantly affecting the performance of LaAlO3-based devices. In this work, utilizing swift (tens of MeV) Si-ion irradiation, the damage behavior of LaAlO3 crystal induced by nuclear or electronic energy loss has been studied in detail utilizing complementary characterization techniques. Differing from other perovskite-structured crystals in which the electronic energy loss could lead to the formation of an amorphous region based on the thermal spike mechanism, in this case, intense electronic energy loss in LaAlO3 will not induce any obvious structural damage. The effects of ion irradiation on the mechanical properties, including hardness increase and elastic modulus decrease, have been confirmed. On the other hand, considering the potential applications of LaAlO3 in the field of integrated optoelectronics, the optical-waveguide properties of the irradiation region have been studied. The significant correspondence (symmetrical inversion) between the iWKB-reconstructed refractive-index profile and SRIM-simulated dpa profile further proves the effects (irradiation-damage production and refractive-index decrease) of nuclear energy loss during the swift-ion penetration process in LaAlO3 crystal. In the case of the rather-thick damage layer produced by swift-ion irradiation, obtaining a damage profile will be constrained owing to the analysis-depth limitation of the characterization techniques (RBS/channeling), and our analysis process (optical guided-mode measurement and subsequent refractive-index-profile reconstruction) also provides a new approach to study the damage behavior (damage profile) once the functional relationship between the refractive index and lattice disorder for the specific material could be determined.
关键词Swift Ion irradiatIon Damage Assessment Waveguide Properties Lanthanum Aluminate Crystal
DOI10.1088/1361-6463/aa5063
收录类别SCI
语种英语
WOS记录号WOS:000392394000003
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27365
专题中科院上海应用物理研究所2011-2018年
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GB/T 7714
Liu, Y,Crespillo, ML,Huang, Q,et al. Lattice damage assessment and optical waveguide properties in LaAlO3 single crystal irradiated with swift Si ions[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2017,50(5):-.
APA Liu, Y,Crespillo, ML,Huang, Q,Wang, TJ,Liu, P,&Wang, XL.(2017).Lattice damage assessment and optical waveguide properties in LaAlO3 single crystal irradiated with swift Si ions.JOURNAL OF PHYSICS D-APPLIED PHYSICS,50(5),-.
MLA Liu, Y,et al."Lattice damage assessment and optical waveguide properties in LaAlO3 single crystal irradiated with swift Si ions".JOURNAL OF PHYSICS D-APPLIED PHYSICS 50.5(2017):-.
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