Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The general behavior of magnetite (iron ferrite) at its low temperature transformation ($\mathrm{ca}$ 118\ifmmode^\circ\else\textdegree\fi{}K) is reviewed. One of the properties which undergoes a large change is the magnetocrystalline anisotropy, which is larger in magnitude and has a lower symmetry below the transfor…
Summary Proofs are given of theorems stated in the Bishop-Hill theory of crystal distortion. Mathematical relations are established for the deformation of crystals by simultaneous shears, and the possibility of enforcing an arbitrary strain by glide is examined. The uniform stress states not exceeding the critical she…
The spin-lattice relaxation time, ${T}_{1}$, has been determined in single crystals of nickel ferrite, by using the ferromagnetic resonance effect at a frequency of 9000 Mc/sec. At high levels of microwave power, the saturation effect is observed both in the resonance absorption and in the component of magnetization a…
R. W. Pittman, J. Chem. Soc., 1953, 3888 DOI: 10.1039/JR9530003888
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIndustrial FluorochemicalsJames O. HendricksCite this: Ind. Eng. Chem. 1953, 45, 1, 99–105Publication Date (Print):January 1, 1953Publication History Published online1 May 2002Published inissue 1 January 1953https://pubs.acs.org/doi/10.1021/ie50517a034https://doi.org/10.1021…
Surface oxidation products on various alloys due to varying oxidizing conditions within the range of 300–900°C for temperature and 10 -4 –760 mmHg. for air pressure are studied by the electron diffraction method. Alloys studied are copper alloys containing 0.3 % Be, 0.5 % Al, 0.1 % Mg, 7 % Mn and 7 % Ni and that of ir…
R. N. Bennett, P. D. Ritchie, D. Roxburgh and J. Thomson, Trans. Faraday Soc., 1953, 49, 925 DOI: 10.1039/TF9534900925
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…