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The triclinic structure of Mg~(OH)aC1.4H20 has been studied by the method of isomorphous replacement. Atomic positions were derived from a :Fourier (010) projection based on powder data, together with such information as could be gathered from the more or less diffuse (hkl) reflexions.
R. J. W. Le Fèvre and J. Northcott, J. Chem. Soc., 1953, 867 DOI: 10.1039/JR9530000867
B. A. Toms and D. J. Strawbridge, Trans. Faraday Soc., 1953, 49, 1225 DOI: 10.1039/TF9534901225
Copper reacts readily with aqueous ammonia in the presence of oxygen, as follows: Cu + 1 / 2 O 2 + 4 NH 3 aq + HOH − → Cu NH 3 4 + + + 2 OH − . The kinetics of this reaction were investigated over a wide range of NH 3 and NH 4 + concentrations, oxygen pressures, temperatures, and stirring velocities. The rate of disso…
P. P. Birnbaum, J. H. Linford and D. W. G. Style, Trans. Faraday Soc., 1953, 49, 735 DOI: 10.1039/TF9534900735
This paper surveys current theoretical work on spin-spin and spin-lattice relaxation in ferromagnetic substances with reference to ferromagnetic resonance. It is shown that it is possible to give a reasonable explanation of the principal features of the experimental results. The calculations, carried out for nickel in…
A report is given of recent investigations of anodically formed coatings on magnesium, zinc, and cadmium in and solutions. The growth of the coatings was followed by means of x‐ray and electron diffraction and electron microscopy. It was found that the metal oxide was favored as initial product. Depending upon the rel…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Preparation of Sodium Borohydride by the High Temperature Reaction of Sodium Hydride with Borate Esters1H. I. Schlesinger, Herbert C. Brown, and A. E. FinholtCite this: J. Am. Chem. Soc. 1953, 75, 1, 205–209Publication Date (Print):January 1, 1953Publication History Publ…
(1953). The thermal conductivity of dielectric solids at low temperatures. Advances in Physics: Vol. 2, No. 5, pp. 103-140.
Infrared spectra of α- and β-quartz, α- and β-cristobalite, and vitreous silica were studied by the reflection method using natural and polarized radiation in the 700 to 1400 cm−1 wave number interval. By measuring the reflecting powers at two different angles of incidence, the indices of refraction and extinction wer…
A general phenomenological theory of the static and dynamic behavior of bolometers is presented. The theory assumes as given the fundamental relations between the temperature and resistance of the bolometer, and the past history of the power dissipated within it. From these basic properties are derived a number of the…
1. The study of the thermomagnetic properties of a natural single crystal of rhomobohedral iron sesquioxide, ${\mathrm{Fe}}_{2}$${\mathrm{O}}_{3}$, by Pauthenet, confirms the hypothesis of the superposition of a fundamental antiferromagnetism and a parasitic ferromagnetism. Below 260\ifmmode^\circ\else\textdegree\fi{}…
A brief discussion is given of the meaning of initial permeability, the principles of its measurement, and the nature of "dimensional resonance." In considering magnetic spectra containing only a single resonance, typical data on sintered ferrites and on finely divided ferrite powders are reviewed, and some of the the…
Neutron diffraction measurements are reported on a series of transition elements as an investigation into their magnetic structures. Scattering data have been taken for W, Mo, Nb, V, Cr, Mn, and Fe at various temperatures as low as 4.2\ifmmode^\circ\else\textdegree\fi{}K, and these data are interpreted in terms of the…
Inhibitors having relatively strong oxidizing anions, such as sodium chromate and nitrite, passivate iron both in the presence of air and in deaerated solutions. Much weaker oxidizing agents such as sodium tungstate and molybdate behave similarly to chromate and nitrite in the presence of air but do not prevent corros…
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In attempting to explain the unusual magnetic properties of the iron-nickel alloys, single crystals of alloys containing 35 to 100 percent nickel were prepared, and measurements made of the magnetic crystal anisotropy and magnetostriction as dependent on cooling rate. It is confirmed that there is a large effect of co…
Experimental results are reviewed for Fe, Co, Ni, the Co-Ni and Ni-Cu alloy series. Most of the measurements were made at room temperature. In the case of Ni, data are available from about 10\ifmmode^\circ\else\textdegree\fi{}K to 800\ifmmode^\circ\else\textdegree\fi{}K.In every case studied, the Hall emf consists of…