20 Result(s)

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...

J. Janicskó-Csáthy, A. Nagy, L. Nánai, W. Marine… in Journal of Materials Research (2002)

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...

C. Julien, M. Balkanski in MRS Online Proceedings Library (1992)

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...

M. Balkanski, I. Nachev, J. Deppe, R. F. Wallis in MRS Online Proceedings Library (1992)

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...

P. Dzwonkowski, M. Eddrief, C. Julien, M. Balkanski in MRS Online Proceedings Library (1990)

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 ...

J. Deppe, M. Balkanski, R. F. Wallis, M. Massot in MRS Online Proceedings Library (1990)

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...

J. Deppe, M. Balkanski, R. F. Wallis, A. McGurn in MRS Online Proceedings Library (1990)

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...

C. Julien, L. El-Farh, I. Samaras, I. Riess, M. Balkanski… in MRS Online Proceedings Library (1990)

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...

P. Gomes Da Costa, M. Balkanski, R. F. Wallis in MRS Online Proceedings Library (1990)

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 ...

C. Julien, I. Samaras, S. I. Saikh, M. Balkanski in MRS Online Proceedings Library (1988)

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...

P. A. Burret, C. Julien, M. Jouanne, M. Balkanski in MRS Online Proceedings Library (1988)

Article

Spectroscopic Studies of Fast Ionic Conducting Halogenoborate Glasses

Lithium borate glasses B₂O₃-Li₂O-Li_nX 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...

M. Massot, E. Haro, M. Oueslati, M. Balkanski in MRS Online Proceedings Library (1988)

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 ...

F. A. Fusco, M. Massot, M. Oueslati, E. Haro… in MRS Online Proceedings Library (1988)

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...

M. Jouanne, M. L. Sanjuan, M. A. Kanehisa, M. Balkanski… in MRS Online Proceedings Library (1988)

Article

Raman Spectroscopy and Structural Disorder in Gd₂(Zr_xTi_1−x)₂O₇

Raman measurements on the Gd₂(Zr_xTi_1−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...

M. Oueslati, M. Balkanski, P. K. Moon, H. L. Tuller in MRS Online Proceedings Library (1988)

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...

T. Sekine, C. Julien, M. Jouanne, M. Weber, M. Balkanski in MRS Online Proceedings Library (1988)

Article

Laser-Beam-Glass Interaction Inducing Glass-Crystalline Transformations

E. Haro, M. Balkanski, G. P. Espinosa, J. C. Phillips in MRS Online Proceedings Library (1984)

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.

A. Slaoui, E. Fogarassy, P. Siffert, J. F. Morhange… in MRS Online Proceedings Library (1983)

Article

Pulsed Laser Annealing of R.F.Sputtered Amorphous Si: H.Films, Doped with Arsenic

Arsenic doped amorphous silicon layers have been deposited on silicon single crystals by R.F. cathodic sputtering of a silicon target in a reactive argon-hydrogen mixture, and annealed with a Q-switched Ruby l...

E. Fogarassy, R. Stuck, M. Toulemonde, P. Siffert… in MRS Online Proceedings Library (1981)