Materials Literature
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Using long-wavelength ($\ensuremath{\lambda}\ensuremath{\sim}2.4$ \AA{}) neutrons, diffraction patterns of ErFe${\mathrm{O}}_{3}$ were taken at 140, 4.2, and 1.5\ifmmode^\circ\else\textdegree\fi{}K. Two possible structures for the ${\mathrm{Fe}}^{3+}$ spin system at 1.5\ifmmode^\circ\else\textdegree\fi{}K were found t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysicochemical and biological studies on the metal-induced conformational change in troponin A. Implication of carboxyl groups in the binding of calcium ionWilliam D. McCubbin and Cyril M. KayCite this: Biochemistry 1973, 12, 21, 4228–4232Publication Date (Print):October 1,…
Variations in Auger electron signal intensities with changing primary electron angle of incidence have been correlated with the Kikuchi display from a Si (111) surface. From this correlation a qualitative depth distribution of the carbon contaminant is inferred.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRadiation chemistry of aqueous solutions of simple RCN [hydrogen or alkyl cyanide] compoundsI. Draganic, Z. Draganic, Lj. Petkovic, and A. NikolicCite this: J. Am. Chem. Soc. 1973, 95, 22, 7193–7199Publication Date (Print):October 1, 1973Publication History Published online1…
Metavariscite, AlPO 4.2H 2O, monoclinic, P2 1/ n, a=5.178 (2), b=9.514 (2), c=8.454 (2) Aring, beta=90.35 (2)deg, Z=4, Dm=2.54, Dx=2.535 g cm -3. PO 4 tetrahedra share vertices with four AlO 4(OH 2) 2 octahedra and vice versa. With Al...O distances of 1.892 (2) and 1.953 (2) Aring the two waters coordinate the aluminu…
The multiple α absorption of bulk-crystallized polyethylene (PE) was separated into the α1 and the α2 absorptions on the assumption that this α2 absorption is associated with shear deformation of lamellar crystals, i.e., has the same characteristics as in single crystal mats. The separated α1 mechanism is related to t…
Abstract The fracture surface of notched impact specimens of polycarbonate tested in the range 130°C to −196°C have been studied by use of optical microscopy and scanning electron microscopy. The morphological features associated with the initiation and propagation of fracture have been determined and interpreted in t…
Magnetic susceptibilities have been measured in the temperature region 1.7–60°K both parallel and perpendicular to the chemical chain on single crystals of Cu(pyrazine)(NO3)2. It has been shown that there is qualitative disagreement between experiment and theory if the appropriate equations derived for the Ising model…
Abstract Dynamic x‐ray diffraction and dynamic birefringence techniques are employed to determine the nature of the molecular motions associated with the α mechanical loss processes for low‐density polyethylene. The results indicate that the low‐temperature part of this loss (designated α 1 ) is associated with an int…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProton nuclear magnetic resonance line widths and spin relaxation in paramagnetic metalloporphyrins of chromium(III), manganese(III), and iron(III)Gerd N. La Mar and F. Ann. WalkerCite this: J. Am. Chem. Soc. 1973, 95, 21, 6950–6956Publication Date (Print):October 1, 1973Pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCopper(II) and vanadyl complexes of binucleating ligands. Magnetic exchange interactions propagated through an extensive organic systemElvira F. Hasty, Therese J. Colburn, and David N. HendricksonCite this: Inorg. Chem. 1973, 12, 10, 2414–2421Publication Date (Print):October…
The $4{f}^{1}\ensuremath{\rightarrow}5{d}^{1}$ transitions of ${\mathrm{Ce}}^{3+}$, ${E}_{u}^{\ensuremath{'}\ensuremath{'}}(^{2}F_{\frac{5}{2}})\ensuremath{\rightarrow}{U}_{g}^{\ensuremath{'}}(^{2}T_{2g})$ and ${E}_{u}^{\ensuremath{'}\ensuremath{'}}(^{2}F_{\frac{5}{2}})\ensuremath{\rightarrow}{E}_{g}^{\ensuremath{'}\e…
The results are presented of a detailed study of the efficiency of a sinusoidal diffraction grating in the region of Woods anomalies. Strong absorption and weak re-emission of light due to surface plasmons are observed.
The order-disorder phase transitions in the linear chain compounds ${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$NMn${\mathrm{Cl}}_{3}$ (TMMC), ${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$NNi${\mathrm{Cl}}_{3}$ (TMNC), ${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$NCd${\mathrm{Cl}}_{3}$ (TMCC) were investigated using the complementary techniques…
At low temperatures, metastable crack growth dictates the environment free strength of sapphire. Plastic deformation by dislocation motion or twin formation and growth plays no role in the fracture process at temperatures below 400° C. These conclusions are supported both by crack growth studies and critical stress in…
The relationship between morphology and several physical properties (tensile, thermal, dielectric, and dynamic mechanical properties) of amorphous poly-bisphenol-A-carbonate was examined as a function of annealingtime at temperatures below the glass transition temperature (Tg). The change in structure of the amorphous…
The burn injury hazard of fabrics has been conceptually related to laboratory test methods. The relation is to be de rived from the description of the relevant processes which lead to burn injury. Among these processes stand out the ig nition, the burn and the tissue denaturalization processes as predominately determi…
The ratios of the strain-optical constants were measured for several alkali halides using the author’s zeroth-order pulsed-ultrasound technique. The crystal samples were oriented so that three different experimental conditions were possible. This results in three linear equations in the two unknown ratios p12/p11 and…
The electric field effect of the electron spin resonance for Fe 3+ in SrTiO 3 has been studied. The temperature and electric field dependence of the ESR shift indicates that the induced spin Hamiltonian should involve the square of induced polarization with the form \(\mathscr{H}_{p}{=}\sum T_{ijkl}S_{i}S_{j}P_{k}P_{l…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHomotropilidene-palladium dichloride complexesE. Vedejs, Mary F. Salomon, and Paul D. WeeksCite this: J. Am. Chem. Soc. 1973, 95, 20, 6770–6778Publication Date (Print):October 1, 1973Publication History Published online1 May 2002Published inissue 1 October 1973https://pubs.a…