Optical constants and polarimetric properties of ТіО2–MnO2 thin films

Брус, В. В.; Pidkamin, L. Y.; Abashin, Sergey; Kovalyuk, Z. D.; Maryanchuk, P. D.; Chugai, O. N.

doi:10.1016/j.optmat.2012.06.007

Cited by 26 publications

(8 citation statements)

References 23 publications

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“…In addition to the pure end-members, titanium–manganese mixtures are being considered for several applications. For example, manganese doping has been investigated to reduce the band gap energy of TiO 2 in order to allow for a greater proportion of the solar spectrum to be absorbed in solar cell applications. − Formation of lithiated Mn–Ti solid solutions with the spinel structure has been considered to minimize the capacity loss during cycling of pure lithiated Mn spinel oxide for Li-ion batteries. − In our own work, epitaxial single-crystal thin films of Mn x Ti 1– x O 2 with the rutile structure have been synthesized to facilitate the derivation of intrinsic structure–property relationships for energy materials, in particular as it relates to diffusion of inserted lithium ions.…”

Section: Introductionmentioning

confidence: 99%

Shell Model for Atomistic Simulation of Lithium Diffusion in Mixed Mn/Ti Oxides

et al. 2014

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Mixed Mn/Ti oxides present attractive physicochemical properties such as their ability to accommodate Li for application in Li-ion batteries. In this work, atomic parameters for Mn were developed to extend an existing shell model of the Li−Ti−O system and allow simulations of pure and lithiated Mn and mixed Mn/Ti oxide polymorphs. The shell model yielded good agreement with experimentally derived structures (i.e., lattice parameters and interatomic distances) and represented an improvement over existing potential models. The shell model was employed in molecular dynamics (MD) simulations of Li diffusion in the 1 × 1 c-direction channels of Li x Mn 1−y Ti y O 2 with the rutile structure, where 0 ≤ x ≤ 0.25 and 0 ≤ y ≤ 1. In the infinite dilution limit, the arrangement of Mn and Ti ions in the lattice was found to have a significant effect on the activation energy for Li diffusion in the c channels due to the destabilization of half of the interstitial octahedral sites. Anomalous diffusion was demonstrated for Li concentrations as low as x = 0.125, with a single Li ion positioned in every other c channel. Further increase in Li concentration showed not only the substantial effect of Li−Li repulsive interactions on Li mobility but also their influence on the time dependence of Li diffusion. The results of the MD simulations can inform intrinsic structure−property relationships for the rational design of improved electrode materials for Li-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Shell Model for Atomistic Simulation of Lithium Diffusion in Mixed Mn/Ti Oxides

et al. 2014

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“…The patterns of the change of the energy and polarization characteristics of reflected and scattered light by a film, which are determined by the parameters of the film's nonuniformities, can be described on the basis of Stokes vector-parametric representation and linear transformation of the radiation flow by means of Mueller matrices [23][24][25][26][27][28][29]. Four Stokes parameters are considered as the components of a single vector-parameter, which provides complete information about polarized light.…”

Section: A Optical Properties Of Propolis Filmsmentioning

confidence: 99%

11th International Conference “Correlation Optics”: Propolis films for hybrid biomaterial-inorganic electronics and optoelectronics

et al. 2014

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We report on the analysis of optical, polarimetric, and electrical properties of propolis films and hybrid biomaterial-inorganic heterojunctions based on them. It was shown that the material of the propolis films belongs to wide-bandgap optically active substances with the light-scattering centers, which possess complex optical properties. The values of the specific resistance ρ(P)=1.9·10⁷ Ω·cm and dielectric constant ε(P)=19.5 of the propolis film were determined from the spectral distribution of the real and imaginary components of its impedance at room temperature, respectively. The dominating current transport mechanisms through the hybrid bioinorganic heterojunction propolis/p-CdTe were established to be the interface-states-assisted generation-recombination within the depletion region via deep energy levels at forward bias as well as the leakage current through the shunt resistance at reverse bias.

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“…[4]. Comparative analysis of the coordinate networks of the characteristic meanings [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] was analyzed in detail using statistical, correlation, and fractal approaches. .…”

Section: The Structure Of the Allocation Of The Characteristic Meaninmentioning

confidence: 99%

Fractal structure of optical anisotropy Mueller-matrices images of biological layers

et al. 2013

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The basic crystal optical mechanisms of formation of polarizable singularity images of polycrystalline networks of body fluid films with slight phase fluctuations were determined. Coordinate allocation of Lstates is conditioned by the interaction of laser radiation with the substance of optically active proteins; C -states form on account of the phase modulation of orderly acicular protein crystals. On this basis the new Mueller-matrices method of diagnostics and differentiation of the changes of birefringence of body fluid films was developed and nosology differentiation was carried out for the first time. The results of the comparative study of the diagnostic effectiveness of the use of statistic, correlation, and fractal analysis of allocation of the characteristic meanings of the phase Mueller-matrices images in the differentiation of the polycrystalline film structure changes of body fluids were given.

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Optical constants and polarimetric properties of ТіО2–MnO2 thin films

Cited by 26 publications

References 23 publications

Shell Model for Atomistic Simulation of Lithium Diffusion in Mixed Mn/Ti Oxides

Shell Model for Atomistic Simulation of Lithium Diffusion in Mixed Mn/Ti Oxides

11th International Conference “Correlation Optics”: Propolis films for hybrid biomaterial-inorganic electronics and optoelectronics

Fractal structure of optical anisotropy Mueller-matrices images of biological layers

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