Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganosulfur Derivatives of the Metal Carbonyls. IV. The Reactions between Certain Organic Sulfur Compounds and Iron CarbonylsR. B. KingCite this: J. Am. Chem. Soc. 1963, 85, 11, 1584–1587Publication Date (Print):June 1, 1963Publication History Published online1 May 2002Publ…
The magnetic anisotropy of a single crystal of Mn 5 Ge 3 is measured by means of a torque magnetometer. The direction of easy magnetization is found to lie along the c -axis between room and liquid nitrogen temperatures. The anisotropy constants are determined as 3.0×10 5 erg/cm 3 at room temperature and 4.2×10 6 erg/…
The thermal conductivity of a perfect but finite crystal is investigated at low temperatures when Umklapp processes may be neglected. The sample is taken to be large compared with the mean free path due to momentum conserving phonon-phonon processes. A mean free time approximation is used for the phonon distribution f…
The lattice parameters of single-crystal Gd, Dy, and Ho have been measured over their temperature ranges of magnetic ordering. The $c$ axis and volume of all three hexagonal close-packed structures were found to increase with decreasing temperature below their respective N\'eel or Curie points. The temperature depende…
Resistivities of evaporated or sputtered polycrystalline and epitaxially grown single-crystal gold films of thickness 100–1000 Å have been measured in situ during deposition. Single-crystal gold films have been grown epitaxially on cleaved mica by sputtering and, as indicated by electron diffraction studies, are atomi…
A system employing a mass spectrometer as a continuous flow gauge has been used to study the oxygen evolved from aluminum-coated glass as a result of electron bombardment. The outgassing from most glasses is found to fit the empirical equation Q=Q∞(1-exp-t/K). In this equation Q is the sum of the oxygen released durin…
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Determining the approximate crushing stress of hexagonal cell structures subject to axial loading
A descriptive classification of cross‐stratified units is proposed based on six objective criteria, and diagnoses are given for fifteen distinct kinds of cross‐stratified unit recognised with their aid. The origin of each kind is discussed in the light of existing observational, experimental, and theoretical studies.…
The thermal diffusivity of pure silicon has been measured from 300 to 1400\ifmmode^\circ\else\textdegree\fi{}K. The specific heat of the same material over the same temperature range has been measured by Dennison. The thermal conductivity was obtained from the product of the thermal diffusivity, specific heat, and den…
Abstract Several methods of measuring the unsaturation remaining in natural rubber after cyclization have been compared. Approximate agreem ent was obtained with the reagents, perbenzoic acid, phenyl iododichloride and ozone; iodine chloride gave high values. Perbenzoicacid is considered the most satisfactory of these…
The electrical resistance of single crystal graphite shows a very sharp increase at above 150 kilobars, accompanied by a drifting upward with time. The behavior is typical of a first-order phase transition, and is irreversible. X-rays on the material after removal from the cell show lines of a new material with a stru…
A theoretical estimate of the polarizabilities of ions in the alkali halides is made by means of a procedure based upon the product approximation which distinguishes the ionic constituents in the crystals but allows for their overlap and mutual interaction. Analysis by means of the Thomas-Kuhn sum rule is used allowin…
Below 1.2\ifmmode^\circ\else\textdegree\fi{}K, the specific heat of natural Madagascar graphite is: $C=13.8T+27.7{T}^{3}$ \ensuremath{\mu}J/mole deg. The coefficient of the linear term agrees well with theoretical calculations of the electronic specific heat of a pure single crystal of graphite. The ${T}^{3}$ term yie…