Abstract
In this thesis, it is used the X-ray absorption spectroscopy (XAS), X-ray photoelectron spectroscopy (XPS) and scanning photoelectron microscopy (SPEM) to discuss the electronic and atomic structure of different condensed materials including RuO2 and IrO2 nanorods, quasi-one-dimension (1-D) blue bronze K0.3MoO3 and high-density SiO2 thin films. In RuO2 and IrO2 nanorods research, the results reveal that the hybridization between O 2p and metal t2g obitals is weaker in IrO2 than in RuO2. The tip-region enhancement of the SPEM intensity is greater for RuO2 than for IrO2, which suggests that RuO2 be a better material for field emission application. In 1-D blue bronze K0.3MoO3 material, the existence of the K+ ion has play an important role to connect the MoO3 octahedral structure and maintain the anisotropy structure in the charge-density-wave (CDW) transition. In the high density SiO2 thin films, we discovered that the different growth processes will cause the vary Si–O bonding, therefore we can control the dielectric parameter by changing the growth method.
Published Version
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