The charge-trapping characteristics of BaTiO3 with and without nitrogen incorporation were investigated based on Al/Al2O3/BaTiO3/SiO2/Si (MONOS) capacitors. The physical properties of the high-k films were analyzed by transmission electron microscopy and X-ray photoelectron spectroscopy. Compared with the MONOS capacitor with BaTiO3 as charge-trapping layer, the one with nitrided BaTiO3 showed ...

This paper reports the total dose effects and post-irradiation anneal effects on the two recombination current peaks and the bottom current in commercial power VDMOSFET devices irradiated with Cs -ray or X-ray radiation. The two interface recombination current peaks show a slightly different rate of increase as a function of the radiation dose. Slightly different diode ideality factors are foun...

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Interplay of spin, charge, orbital and lattice degrees of freedom in oxide heterostructures results in a plethora of fascinating properties, which can be exploited in new generations of electronic devices with enhanced functionalities. The paradigm example is the interface between the two band insulators LaAlO3 and SrTiO3 that hosts a two-dimensional electron system. Apart from the mobile charg...

Measurements of polarization-dependent soft x-ray absorption reveal that the electronic states determining the low-energy excitations of NaxCoO2 have predominantly a(1g) symmetry with significant O 2p character. In contrast to the prediction of band theory, doping-dependent O 1s x-ray absorption shows a large transfer of spectral weight, providing spectral evidence for strong electron correlati...

The electronic charge density distribution or the electrostatic atomic potential of a solid or molecule contains information not only on the atomic structure, but also on the electronic properties, such as the nature of the chemical bonds or the degree of ionization of atoms. However, the redistribution of charge due to chemical bonding is small compared with the total charge density, and there...

The analysis method developed for kaonic nitrogen X-ray data obtained at the DAFNE electron–positron collider of Frascati National Laboratories using Charge-Coupled Devices (CCDs) in the DEAR experimental setup is described. Background events could be highly rejected by this analysis procedure. Three sequential X-ray lines from kaonic nitrogen transitions, showing good energy resolution, could ...

A review is presented on recent developments in ultra-soft x-ray emission spectroscopy. Especially, instrumental developments related to high resolution studies of free molecules and to the use of synchrotron radiation are discussed. The most recent results from three different applications of ultra-soft x-ray emission spectroscopy are presented: electron excited spectra of free molecules, mono...

The crystallinity of cadmium titanate (CdTiO3) was greatly improved when synthesized under mild reaction conditions, in the presence of chloride. The highly crystalline CdTiO3 showed much enhanced photodegradation of methyl orange (MO) under simulated sunlight. CdTiO3 was characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS),...

We report our investigations of X rays emitted during the muonic cascade in hydrogen employing charge coupled devices as X-ray detectors. The density dependence of the relative X-ray yields for the muonic hydrogen lines ( Kα, Kβ and Kγ) has been measured at densities between 0.00115 and 0.97 of liquid hydrogen density. In this density region collisional processes dominate the cascade down to lo...