X射线光电子能谱
谱线
价(化学)
材料科学
韧致辐射
过渡金属
分析化学(期刊)
结晶学
原子物理学
化学
电子
核磁共振
物理
生物化学
有机化学
量子力学
天文
催化作用
色谱法
作者
D. D. Sarma,D. Topwal,A. Chainani
摘要
We report various high-energy electron spectroscopic data on sintered polycrystalline La1−xSrxMnO3 and La1−xSrxCoO3 with x=0.0, 0.1, 0.2, 0.3, and 0.4. The data presented consist of x-ray photoelectron transition metal 2p core level and valence band spectra, x-ray initiated transition metal L3VV spectra, Bremsstrahlung isochromat spectra, and soft x-ray absorption spectra at the oxygen K-edge. Substitution of trivalent La with divalent Sr introduces holes into the system, driving an insulator-to-metal transition along with magnetic transitions. The spectral changes with progressive hole doping reflect the evolution of electronic structure across the phase transition.
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