Showing papers in "Journal of Physics and Chemistry of Solids in 2001"

TL;DR: In this paper, the pseudogap energy decreases as Eg(p)∼J(1−p/pcrit) for p pcrit, where pcrit∼0.19 is close to optimal Tc.

TL;DR: In this paper, a high-pressure study of a scale of Cr2O3, prepared by oxidation of chromium in oxygen at 1173 K, was performed at room temperature in a diamond anvil cell.

TL;DR: In this article, the authors carried out laser-induced fluorescence measurements of hBN powder at room temperature under different environmental conditions (dry powder and suspensions in water or ethanol) and determined the absorption onset, related to the bandgap energy of this indirect gap semiconductor, has been precisely determined to be E g = 4.02±0.01 eV.

TL;DR: In this article, the characterization of metallic nanoparticles prepared by various methods and the physical properties including the theory and measurements of linear and nonlinear optics, electric and magnetic properties are reviewed.

TL;DR: In this paper, the third order non linear optical properties of Chalcogenide glasses have been studied with respect to their third order refractive index (n2) and non linear absorption (β) properties.

TL;DR: In this paper, the design and performance of a large Debye-Scherrer Camera with Imaging Plate (IP) as detectors, which was very recently installed at SPring-8, BL02B2, is reported.

TL;DR: In this paper, the authors carried out 13 C-NMR measurements on the quasi two-dimensional organic conductor α-(BEDT-TTF) 2 I 3, which exhibits metal-insulator transition at 135 K at ambient pressure.

TL;DR: In this article, the behavior of anatase TiO 2 single crystal under hydrostatic high pressure of up to 6.7 GPa has been investigated using a diamond anvil cell at room temperature by Raman spectroscopy.

TL;DR: In this paper, the phase transition of the metastable VO 2 (B) is characterized in the mid-infrared (MIR) region, using transmittance, reflectance and normal integrated emissivity measurements.

TL;DR: In this article, the surface and crystal-chemistries of two members with n=2 and 3 have been investigated by X-ray photoelectron spectroscopy, and the results show that the constituent species are characterized by low binding energies, sometimes exceptionally so.

TL;DR: In this paper, the crystal structures and bulk moduli of the known or proposed TiO2 polymorphs were simulated using static lattice energy minimisation and two independent forcefields, namely a variable charge Morse potential and a fixed charge rigid ion potential.

TL;DR: In this paper, powder neutron diffraction at ambient temperature, 800, and 1000°C was used to obtain a distorted perovskite (orthorhombic, pure: Pnma, doped: Imma ) for both phases.

TL;DR: In this article, structural phase transition of NbO 3 ceramics was investigated by impedance spectroscopy, and the reproducibility of properties was investigated as a function of several thermal cycles at temperature ranges from 25 to 750°C.

TL;DR: In this paper, the embedded-cluster numerical discrete variational method has been developed to investigate electronic structure of F-type color center in rutile TiO 2 (F-, F + - and F 2+ -centers).

TL;DR: In this paper, the structure of the first coordination shell around tellurium atoms was investigated using Raman scattering and X-ray Absorption Spectroscopy (XAS).

TL;DR: In this article, the authors present a review of the use of polycrystalline zeolite membranes as a shape-selective membrane for the encapsulation and orientation of guest atoms and molecules.

TL;DR: In this article, the superconducting and mechanical properties of these compounds have been investigated by measuring electrical resistivity, X-ray diffraction, surface morphology and microhardness, and the results are explained on the basis of low and high- T c phases and bulk hardness.

TL;DR: In this paper, the authors report a series of investigations on the homemade homogeneous magnetic fluids and report the most spectacular property discussed in their research is the ordered structure of the magnetic columns formed in the magnetic fluid thin film under the influence of the external magnetic field.

TL;DR: In this article, the effect of rare earth (Ln)-doped glass-ceramics based on the system K2O-Nb2O5-TeO2 has been examined.

TL;DR: The temperature dependence of the Gruneisen parameter of MgSiN 2, AlN and β-Si 3 N 4 was evaluated from thermal expansion, elastic constants and heat capacity data of these materials as mentioned in this paper.

TL;DR: In this paper, the authors reported 63 Cu-Knight shift measurements on multilayered high-T c cuprate oxides that include inequivalent outer (OP) and inner (IP) CuO 2 planes in a unit cell with number of planes n =3-5.

TL;DR: In this paper, the effects of annealing on the physical and magnetic properties of a freeze-dried Fe-Cu cyanide were studied, where the particle size was in the nanoscale range and a face-centered cubic crystal structure with lattice parameter of around 10 A was obtained.

TL;DR: In this article, the magnetic behavior in θ-(BEDT-TTF)2RbZn(SCN)4 with a 2D closed Fermi surface has been studied by the precise measurements of the angular dependence of 13C-NMR lineshape.

TL;DR: In this paper, the photo-induced melting processes corresponding to these two types of Au nanostructures demonstrate quite different spectral responses associated with their structural variations, and they demonstrate that a spectral hole burning can be uniquely achieved in the case of TGNRs suspension after 1064-nm low-fluence laser beam irradiation.

TL;DR: In this paper, the origin of paramagnetism in fluorinated graphite was studied by means of EPR and 19 F NMR spin-lattice relaxation measurements.

TL;DR: In this article, the authors compared the results of three aluminum polycations (Al13 ϵ-Keggin Johansson-type, Al13 Mogel-type and Al30 δ-Taulelle-type) measured by 27Al solid state NMR, using MAS and 3QMAS spectroscopies.

TL;DR: In this article, the behavior of the apparent Arrhenius energy and molar conductivity in the superionic region as well as on melting crystals has been characterized based on the use of a capillary-type cell made of hexagonal boron nitride.

TL;DR: In this paper, the formation of lead chalcogenides in a direct elemental combination pathway is based on X-ray diffraction (XRD) and transmission electron microscopy (TEM).

TL;DR: In this article, high pressure synchrotron X-ray diffraction measurements of hydrated zeolite Li-A and Na-A were carried out at pressures up to 4.1 GPa.

TL;DR: In this article, green light emitting Mn2+ doped Zn2SiO4 phosphor particles were synthesized by a seeded hydrothermal method at 230°C for 2 hours.