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For pt.I see ibid., vol.6, no.2, p.16-22 (1990). In the first part it was shown that the virtually universally observed relaxation behavior of solid dielectrics is radically incompatible with the classical Debye behavior. It was also pointed out that the widely accepted interpretation in terms of distributions of rela…
The compounds YTi(Fe1−xCox)11 form complete solid solutions (0≤X≤1) all of which crystallize in the ThMn12-type tetragonal structure. The substitution effects of Fe with Co on saturation magnetization and Curie temperature have been investigated. A neutron-diffraction study has been carried out on YTiCo11 and YTi(Co0.…
The rates of densification and the mechanical properties of pure Al 2 O 3 and ZrO 2 ‐toughened Al 2 O 3 (ZTA) have been investigated as a function of the temperatures and time schedules used for hot isostatic pressing (HIP) as a postsintering heat treatment for samples which had already been pressureless sintered in a…
Ultrafine and nearly spherical particles of zinc ferrite were synthesized under mild hydrothermal conditions by precipitating from metal nitrates. These particles exhibited antiferromagnetic ordering below 13 K. Mössbauer spectroscopic measurements revealed the subdomain superparamagnetic nature of the particles havin…
The magnetic and crystallographic properties have been investigated for NdCo4M (M=B, Al, and Ga). The temperature dependencies of lattice parameters have been determined between 80 and 730 K by x-ray diffraction. NdCo4B crystallizes in the CeCo4B-type structure, whereas NdCo4M (M=Al and Ga) exhibits a CaCu5-type struc…
A study has been made to investigate the effect of propargyl alcohol (PA) on corrosion and hydrogenation of mild steel exposed in hydrochloric acid solution at different temperatures, concentrations, and exposure times. Different ions have been added to the inhibited acid solution to study their roles on the inhibitiv…
Sm-Co-based sputtered films have been deposited that exhibit a remanence ratio for hysteresis loops measured out of the plane to in the plane of 0.04. These results have been obtained by thermalized sputtering this system in Ar, Ar+Xe mixtures, and in Xe. The use of Xe has allowed a more efficient thermalization of th…
The surface-enhanced Raman spectrum of 2,2’-bipyrimidine adsorbed on silver sol has been obtained and analyzed by using a vibrational assignment previously determined for this azoaromatic molecule. Evidence was found for Ag-N bond formation with the silver substrate and a model is proposed for the adsorption on the ba…
Orbital angular momentum is necessary in order to have magnetic anisotropy. In a magnetic system, orbital angular momentum is caused by spin-orbit coupling as well as by many-body correlation effects. Standard band-structure calculations only include the first of these two contributions. In this paper it is argued tha…
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Rosette‐shaped clusters of barite crystals were found on the depositional surface and in the inner, complex crossed‐lamellar shell layer of Corbicula fluminea collected from the Maurice River, New Jersey. Morphological analyses revealed that barite crystallized directly from the extrapallial fluid onto the inner shell…
Magnetic and structural characteristics of RCo5−xAlx have been established for R=Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Er, and Tm. All systems have the CaCu5 structure. Al and Co are randomly distributed over the Co-sublattice sites. Al-substitution decreases μCo and Tc and significantly alters magnetic anisotropy. Analysis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVisible-light-mediated living and immortal polymerizations of epoxides initiated with zinc complexes of N-substituted porphyrinsYoshihiko Watanabe, Takuzo Aida, and Shohei InoueCite this: Macromolecules 1990, 23, 10, 2612–2617Publication Date (Print):May 1, 1990Publication H…
In this paper three examples of new liquid crystalline compounds with azamacrocyclic cores are described. A part from a substituted hexacyclene with twelve alkoxy sidechains, two triazacrownether derivatives are presented. Their discotic molecular shape causes mesomorphic behaviojr, which is characterized by means of…
The temperature dependence of the layer compressional elastic constant B has been studied in four different compounds. Two of them, 4-cyano-4'-(n-octyl)biphenyl and 4-cyano-4'-(n-octyloxy)biphenyl, are polar and give partially bilayered smectic-${\mathit{A}}_{\mathit{d}}$ phases while the remaining two are nonpolar an…
Electrostatic energies of interaction between type I collagen molecules were calculated, using models developed by Timasheff and Hill. These energies, along with a contribution from hydrophobic forces, were then incorporated into an equation due to Flory that described phase equilibria of rod-like polymers. The Flory…
The resonance Raman spectra of water-soluble porphyrins, Cu(TMpy-P4) and Ni(TMpy-P4), and their mixtures with DNA, Poly(dG-dC).Poly(dG-dC), and Poly(dA-dT).Poly(dA-dT) were measured using 426 nm pulsed laser excitation (and 556 nm for some applications). At high laser power, the solution of Cu(TMpy-P4) mixed with DNA…
Structural and magnetic properties of the ternary R14Fe78C8 compounds, where R=Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, and Lu, were systematically investigated. By means of properly annealing treatment, the tetragonal structure isotropic to the Nd2Fe14B phase could be well formed in the above compounds. The lattice constants…
Thermoluminescence characteristics of a new phosphor, LiNaSO4:Eu, are reported. The phosphor has a prominent glow peak around 405 K, emission around 412 nm, which lies in the most sensitive region of the common photomultiplier tubes, good sensitivity, excellent reusability and moderate fading. It is suggested that the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRectifying bi-layer electrodes: layered conducting polymers on platinumWalter Torres and Marye Anne FoxCite this: Chem. Mater. 1990, 2, 3, 306–311Publication Date (Print):May 1, 1990Publication History Published online1 May 2002Published inissue 1 May 1990https://pubs.acs.or…