Materials Literature
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We write equations of motion for density variables that are equivalent to Newton's equations. We then propose a set of trial equations parametrized by two unknown functions to describe the exact equations. These are chosen to best fit the exact Newtonian equations. Following established ideas, we choose to separate th…
The magnetic and transport properties of the layered manganites ${\mathrm{La}}_{1.4}{\mathrm{Sr}}_{1.6}{\mathrm{Mn}}_{2\ensuremath{-}y}{\mathrm{Ti}}_{y}{\mathrm{O}}_{7}$ $(y<~0.10)$ are investigated. For the undoped and doped samples, magnetization and electron-spin-resonance experiments exhibit coexistence of the…
Taking advantage of the multifunctional characteristics of carbazole along with rational molecular design, a two-dimensional carbazole chromophore with strong nitro acceptors was synthesized by a facile synthetic route. A first molecular hyperpolarizability of 163 × 10−30 esu was acquired through solvatochromic method…
We study numerically and analytically a simple off-lattice model of scalar harmonic vibrations by means of Euclidean random matrix theory. Since the spectrum of this model shares the most puzzling spectral features with the high-frequency domain of glasses (non-Rayleigh broadening of the Brillouin peak, boson peak and…
The stability of a one-component model system interacting through an isotropic potential with an attractive part and a softened core is investigated through integral equations and molecular dynamics simulation. The ‘penetrability ’ of the soft core makes it possible for the system to pass from an expanded liquid struc…
A novel fitting function for the complex frequency-dependent dielectric susceptibility is introduced and compared against other fitting functions for experimental broadband dielectric loss spectra of propylene carbonate taken from Schneider et al (Schneider U, Lunkenheimer P, Brand R and Loidl A 1999 Phys. Rev. E 59 6…
Abstract An extensive research programme was launched with the aim at evaluating the potential of seven different polyamino carboxylic acids (PACAs) using both technical and economic aspects. Dissolving capacity of each compounds was determined under equilibrium conditions as a function of concentration for barite and…
The synthesis and structures of indium complexes incorporating the bidentate monoanionic ligand N, N ‘ -diisopropylaminotroponiminate ( i Pr 2 -ATI) are described. The reaction of InCl 3 with Li[ i Pr 2 -ATI] yields ( i Pr 2 -ATI)InCl 2 ( 3 ), which is converted to ( i Pr 2 -ATI)InMe 2 ( 4 ) by reaction with MeLi; 4 i…
Amorphous <TEX>$Ga_2O_3$</TEX> films have been grown on Si(100) substrates by metal organic chemical vapor deposition (MOCVD) using gallium isopropoxide, <TEX>$Ga(O^iPr)_3$</TEX>, as single precursor. Deposition was carried out in the substrate temperature range 400-800 <TEX>$^{\circ}C$</TEX>. X-ray photoelectron spec…
The first heteropoly acid–dipeptide complex, (HGly-Gly)3PMo12O40·4H2O, was synthesized and characterized by elemental analysis, IR, UV, 1H NMR and single crystal X-ray diffraction. The X-ray crystallographic study showed that the crystal structure was constructed from N–H⋯O and O–H⋯O hydrogen bonds among the (HGly-Gly…
The tetranuclear complexes [Fe(4)(pypentO)(pym)(3)(Oac)(NCS)(3)] x 1.5EtOH (1), [Fe(4)(pypentO)(pym)(Oac)(2)(NCS)(2)(MeO)(2)(H(2)O)] x H(2)O (2), [Fe(2)(pypentO)(NCO)(3)](2) (3), and [Fe(2)(pypentO)(N(3))(3)](2) (4) have been prepared, and their structure and magnetic properties have been studied (pypentOH = 1,5-bis[(…
The new materials CsPbBi(3)Te(6) and CsPb(2)Bi(3)Te(7) were discovered through reactions of CsBi(4)Te(6) with PbTe, whereas the isostructural materials CsSnBi(3)Te(6) and CsSn(2)Bi(3)Te(7) were discovered through corresponding reactions with SnTe. The compounds can also be prepared from stoichiometric mixtures of Cs(2…
A consistent and reproducible one-step method for the preparation of Pd nanoparticles of mean sizes varying from 1.5 to 15 nm with relative standard deviation of <0.5 is reported. We have shown that the particle size can be controlled by changing the concentrations of the stabilizing polymer (PVP) and precursor salt,…
Thin films of amorphous Se 90- x Sb 10 In x and GeSe have been prepared by electron beam evaporation technique. The effect of irradiation of GeSe and Se 90- x Sb 10 In x ( x = 0, 5, 10, 15) thin films on the optical energy gap and dc activation energy has been investigated for different doses of 12 C 5+ and 107 Ag 14+…
The dramatic increases in ionic conductivity in ${\mathrm{Gd}}_{2}({\mathrm{Ti}}_{1\ensuremath{-}x}{\mathrm{Zr}}_{x}{)}_{2}{\mathrm{O}}_{7}$ solid solution are related to disordering on the cation and anion lattices. Disordering in ${\mathrm{Gd}}_{2}({\mathrm{Ti}}_{1\ensuremath{-}x}{\mathrm{Zr}}_{x}{)}_{2}{\mathrm{O}}…
Our objective was to strengthen and stabilize collagen films without the introduction of cytotoxic chemical crosslinkers. We hypothesized that collagen could be rapidly crosslinked with glucose with ultraviolet (UV) irradiation as a catalyst. In theory, UV-generated free radicals can expedite collagen crosslinking wit…
TiO 2 thin films were grown on several kinds of SAMs (self-assembled monolayers) using TC (titanium tetrachloride), TDD (titanium dichloride diethoxide), or TE (titanium tetraethoxide) as a starting material. We discussed the thin film formation mechanism and improvement of feature edge acuity through controlling the…
The synthesis, structure, and photochemical behavior of the trans isomers of 4-(N-phenylamino)stilbene (1c), 4-(N-methyl-N-phenylamino)stilbene (1d), 4-(N,N-diphenylamino)stilbene (1e), and 4-(N-(2,6-dimethylphenyl)amino)stilbene (1f) are reported and compared to that of 4-aminostilbene (1a) and 4-N,N-dimethylaminosti…
Spray pyrolysis was used to prepare polycrystalline thin films of undoped Ga 2 O 3 , as well as those doped separately with Eu 3+ , Tb 3+ and Tm 3+ . The energy gap values of the as-grown films and those annealed at 600\r{}C and 900\r{}C were found to be 4.75, 4.48 and 4.44 eV, respectively. Films containing Eu 3+ and…
The structural stability and electronic structure of face-centered-cubic Ti, Zr, and Hf were studied by means of first-principles full-potential calculations. The total-energy calculations demonstrate that Ti, Zr, and Hf have a locally stable fcc structure, i.e., the elastic stability criteria for a cubic crystal are…