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Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics
Liu, Xiaoran; Cao, Yanwei; Pal, B.; Middey, S.; Kareev, M.; Choi, Y.; Shafer, P.; Haskel, D.; Arenholz, E.; Chakhalian, J.
2017
发表期刊PHYSICAL REVIEW MATERIALS
卷号1期号:7
摘要We report on the selective fabrication of high-quality Sr2IrO4 and SrIrO3 epitaxial thin films from a single polycrystalline Sr2IrO4 target by pulsed laser deposition. Using a combination of x-ray diffraction and photoemission spectroscopy characterizations, we discover that within a relatively narrow range of substrate temperature, the oxygen partial pressure plays a critical role in the cation stoichiometric ratio of the films, and triggers the stabilization of different Ruddlesden-Popper (RP) phases. Resonant x-ray absorption spectroscopy measurements taken at the Ir L edge and the O K edge demonstrate the presence of strong spin-orbit coupling, and reveal the electronic and orbital structures of both compounds. These results suggest that in addition to the conventional thermodynamics consideration, higher members of the Srn+1IrnO3n+1 series can possibly be achieved by kinetic control away from the thermodynamic limit. These findings offer an approach to the synthesis of ultrathin films of the RP series of iridates and can be extended to other complex oxides with layered structure.
关键词Sriro3
学科领域Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17484
专题2017专题
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GB/T 7714
Liu, Xiaoran,Cao, Yanwei,Pal, B.,et al. Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics[J]. PHYSICAL REVIEW MATERIALS,2017,1(7).
APA Liu, Xiaoran.,Cao, Yanwei.,Pal, B..,Middey, S..,Kareev, M..,...&Chakhalian, J..(2017).Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics.PHYSICAL REVIEW MATERIALS,1(7).
MLA Liu, Xiaoran,et al."Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics".PHYSICAL REVIEW MATERIALS 1.7(2017).
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