Materials Literature
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Dielectric properties of N(CH 3 ) 4 CdBr 3 single crystal have been studied. The dielectric constant along the c -direction shows a slight λ-type maximum at 156 K while that along the a -direction shows a discontinuity. The compound exhibits ferroelectric activity along the c -direction below the Curie temperature of…
Our previous paper [Phys. Rev. B 36, 1754 (1987)], in which Hosemann's paracrystal theory was extended to three-dimensional cubic systems, contained some errors. In this paper, we have corrected these errors and further refined the theory. The scattering profiles by our new theory are not so different from the previou…
Materials characterization for optical device purposes relies heavily on a knowledge of material compliances related to dielectric response. These include both linear response (dielectric constant) and various orders of nonlinear response involving electro-optics (Kerr and Pockels effects, harmonic generation, etc.) a…
Luminescence and optical absorption induced by an electron pulse and by a subsequent laser pulse have been studied in densified and undensified amorphous Si${\mathrm{O}}_{2}$ at 77 K. We find that the decay of the optical-absorption change induced by an electron pulse consists of two components: one which decays follo…
A bond-orbital theory of linear electronic response set out in the preceding companion paper (I) is expanded to include nonlinear response. Attention is focused on the third-order susceptibility ${\ensuremath{\chi}}_{\mathrm{ijkl}}^{(3)}$ (particularly as measured by the nonlinear refractive index ${n}_{2}$) in pretra…
The electronic structure of ${\mathrm{Ag}}_{2}$O has been investigated by photoelectron, Auger-electron, and bremsstrahlung isochromat spectroscopy. The experimental results are compared with model one-particle band-structure and two-particle cluster calculations. We extract values for the on-site Ag 4d and O 2p energ…
Diamond and diamondlike thin films produced by various chemical-vapor-deposition processes have been examined using Raman spectroscopy. These films exhibit features in the Raman spectra, suggesting that they are composites of crystalline and amorphous diamond and graphitic structures. The components of this composite…
The authors advance and examine a new mechanism which strongly influences the photoionisation processes above the 4d threshold in Xe and Ba. It is shown that the elastic and inelastic scattering of the inner-shell photoelectron by the outer-shell electrons determines the rate of single and double ionisation, decomposi…
In the authors' previous work data have been presented which indicate that thermoluminescence (TL) at 110 degrees C in crystalline quartz is due to the recombination of electrons released from (GeO 4 ) - centres with holes trapped at (AlO 4 ) 0 centres and at unidentified hole traps. In this paper new results are pres…
The antiferromagnetic structure of triclinic Cu 3 (PO 4 ) 2 (T N =22.2(5)K) has been determined at 2 K by unpolarised neutron diffraction from powdered and single-crystal samples prepared by hydrothermal synthesis. The triacute reduced chemical unit cell has a=4.855(1), b=5.288(1), c=6.184(1) AA, alpha =72.34(1), beta…
We demonstrate a fabrication process for making composite biological/solid-state heterostructures of nanometer dimension (nanoheterostructures). In this process individual protein molecules selectively self-assemble onto a 1.2-nm-thick Ta/W oxide film which has been patterned into a screen-like lattice with holes of 2…
The molecular dynamics with a first-principles interatomic potential is used to study the phase transition of quartz from the \ensuremath{\alpha} to \ensuremath{\beta} phase. The phase transition, successfully reproduced at about 850 K, is shown to have a peculiar dynamical character in that, although the probability…
The phonon structure of monolayer graphite formed on some transition-metal carbides has been investigated by using electron-energy-loss spectroscopy. The dispersion relations of the phonons in the monolayer graphite have indicated peculiar softening in intralayer chemical bonds and considerable bonding between the ove…
We report measurements of the valence- and core-level photoemission spectra of mass-selected, monodispersed Pt clusters. For individual samples consisting of the platinum atom through the six-atom cluster deposited onto a silica substrate, we have followed the development of the individual valence-band electronic stru…
Current issues and problems in the chemical vapor deposition (CVD) of diamond are those which relate to its characterization, its nucleation on foreign surfaces, the question of its formation in preference to the other phases of solid carbon (for example, graphite, chaoite, or lonsdaleite), why different morphologies…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExperimental studies on the rheology of hard-sphere suspensions near the glass transitionLouise. Marshall and Charles F. ZukoskiCite this: J. Phys. Chem. 1990, 94, 3, 1164–1171Publication Date (Print):February 8, 1990Publication History Published online1 May 2002Published in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-pressure Raman and optical absorption studies on lead pyroniobate (Pb2Nb2O7) and pressure-induced phase transitionsA. Jayaraman, G. A. Kourouklis, A. S. Cooper, and G. P. EspinosaCite this: J. Phys. Chem. 1990, 94, 3, 1091–1094Publication Date (Print):February 8, 1990Pu…
One of the basic quantities characterising a system of interacting particles is the nearest-neighbour distribution function H(r). The authors give a general expression for H(r) for a distribution of D-dimensional spheres which interact with an arbitrary potential. Specific results for H(r) are obtained, for the first…
Abstract Since oxidizability of raw rubber is adversely affected by epoxidation, an attempt was made to bind an amine antioxidant to the rubber molecule through the oxirane group. Effective binding was observed only if the latex is neutralized before addition of the amine. Of the three amines used, 4‐amino‐ para ‐phen…
The one-dimensional Thue-Morse sequence with a generating matrix of determinant 0 has been suggested to be intermediate between a periodic structure and a standard quasi-periodic structure like the Fibonacci sequence. The renormalisation procedure developed in the authors' previous study of the one-dimensional Fibonac…