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Article
Comparative Study of Single Crystals and Laser-grown Films of V2O5
Comparative investigations are carried out for spectral (Raman) electrical and structural properties of V2O5 single crystals and polycrystalline samples obtained by IR laser light illumination of pure metallic sa...
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Article
Spectroscopic characterization of lithium doped borate glasses
B2O3-xLi2O3 (x=0, 0.1, 0.5) glasses have been prepared by the Sol-Gel method. The evolution of the composition and the structure of the materials upon thermal treatments are analyzed. Raman spectroscopy measureme...
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Article
Is the Rigid-Band Model Applicable in Lithium Intercalation Compounds?
Numerous layered compounds are interesting materials in which lithium intercalation occurs primarily without destruction of the host lattice. In many cases a rigid-band model is a useful first approximation fo...
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Article
Theory of Ionic Diffusion Across Material Interfaces
Ion diffusion across material interfaces is considered in a sequence of approximations with increasing complexity. First, the one-dimensional lattice gas model of particle diffusion is generalized to include a...
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Article
Structure and Ionic Conductivity of Lithio-Borate Thin Films
Thin films of vitreous solid electrolyte in the boron-oxide/lithium oxide system have been grown using a thermal evaporation technique. Solid electrolyte films of composition B2O3-xLi2O with 0.5≤x≤0.5 are obtaine...
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Article
Lattice Dynamics and Network Dynamics Calculations on Vibrational Modes of Lithium Borate Glasses
The central force nearest neighbor model for glasses is used to discuss the Raman and infrared vibrational data for the family of lithium doped borate glasses B2O3 - xLi2O. The addition of the dopant is shown to ...
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Article
Molecular Dynamics Study of the Lattice Vibration Contribution to the Frequency-Dependent Dielectric Constant of Lithium Iodide
A molecular dynamics simulation has been performed on the crystal lithium iodide, LiI. A rigid ion potential was used with parameters fit to thermal expansion, isothermal compressibility, lattice energy and the f...
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Article
Transport Properties and Lithium Insertion of Compounds Metal-Halogen-Chalcogenides
The transport properties and far-infrared reflectivity of BiSI, BiTel, SbTeI, Bi2Se3 and Bi2S3 have been studied, and the results show a good agreement between the two techniques. Lithium insertion within metal-c...
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Article
Electronic Energy Bands in γ-InSe with and without Intercalated Lithium
The effect of intercalated lithium on the electronic band structure of the γ-polytype of InSe has been investigated using a tight-binding method. The energy bands of the pure polytype were calculated and the r...
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Article
European Networks Focus on Advanced Materials
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Article
Lithium Electrochemical Investigations of Crystalline Layered Compounds
Electrochemical investigations on lithium insertion in crystalline layered chalcogenide compounds are presented. Systematic and precise studies of the voltage-composition relation were made in single crystals ...
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Article
Plasmon-Phonon Coupling in Li Intercalated InSe
The layered semiconductor InSe which is a potential insertion cathode for thin film batteries can be intercalated with lithium which act as donor in the host. Chemical intercalation in n-butyllithium, leads to...
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Article
Spectroscopic Studies of Fast Ionic Conducting Halogenoborate Glasses
Lithium borate glasses B2O3-Li2O-LinX with n=l, X=F, Cl or I are fast ionic conductors. In the perspective of their use as an electrolyte in solid state micro-batteries, spectroscopic investigations of their stru...
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Article
Structural Changes in Fast Ion Conducting Chloride Doped Potassium Borate Glasses
The effects of halide substitution on ionic conductivity in potassium borate glasses are different from those observed in their Li and Na analogs. Physical property and Raman spectroscopy results suggest that ...
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Article
Fe2+ Electronic Transitions in Raman and Infrared Spectra of FePSe3 and FePS3 Crystals
Polarized Raman scattering and infrared absorption measurements were carried out in FePS3 and FePSe3 as a function of temperature. Features at 700-2000 cm−1 are shown to be essentially due to transitions among th...
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Article
Raman Spectroscopy and Structural Disorder in Gd2(ZrxTi1−x)2O7
Raman measurements on the Gd2(ZrxTi1−x)2O7, solid solution show increasing peak widths as the composition is varied from Gd2 Ti2O7, to Gd2 Zr2,O7. The increase in peak width is interpreted as reflecting an increa...
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Article
Raman Scatteringl And Infrared Absorption in Lithium Intercalated MoS2
Raman scattering and IR absorption were studied in Li-intercalated MoS2 at room temperature. After intercalation, new Raman peaks were observed at low-frequency sides of the high-frequency original Raman peaks an...
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Article
European Network Supports Interaction Among Materials Research Labs
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Article
Laser-Beam-Glass Interaction Inducing Glass-Crystalline Transformations
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Article
Optical Properties of Laser Induced Heavily Doped Silicon Layers
The goal of this paper is to investigate optical properties of heavily doped silicon, performed by laser annealing of implanted layers.