Materials Literature
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If ferromagnetism is due to interaction between the electrons of neighboring ferromagnetic atoms, the effect on the magnetic properties of gradually separating these atoms is of interest. For this reason alloys of the Pt-Co and Pd-Co series were investigated. As the alloys were solid solutions, for small cobalt conten…
Article 8. The Crystal Structure of Bixbyite and the C-Modification of the Sesquioxides was published on December 1, 1930 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 75, issue 1).
Abstract Although many of the elastic properties of rubber have been investigated with very interesting results, no measurements have been made, so far as we know, of its cubic compressibility at high pressures. Those measurements which have been made at low pressures yield results varying from 93×10 −6 obtained by Cl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Structure of Nitrated Cellulose. IIF. D. MilesF. D. MilesMore by F. D. Miles and James CraikJames CraikMore by James CraikCite this: J. Phys. Chem. 1930, 34, 11, 2607–2620Publication Date (Print):November 1, 1930Publication History Published online1 May 2002Published ini…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE COMPOSITION AND STRUCTURE OF MESQUITE GUM1Ernest Anderson and Louise OtisCite this: J. Am. Chem. Soc. 1930, 52, 11, 4461–4470Publication Date (Print):November 1, 1930Publication History Published online1 May 2002Published inissue 1 November 1930https://pubs.acs.org/doi/1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE PREPARATION OF SULFUR HEXAFLUORIDE AND SOME OF ITS PHYSICAL PROPERTIESWalter C. Schumb and E. Lee GambleCite this: J. Am. Chem. Soc. 1930, 52, 11, 4302–4308Publication Date (Print):November 1, 1930Publication History Published online1 May 2002Published inissue 1 November…
The Hall effect and the magnetic properties have been measured simultaneously with considerable accuracy in K.S. magnet steel and in hardened high carbon steel. The Hall effect is found to be a single-valued straight-line function of the intensity of magnetization $I$, but is neither a single-valued nor a straight-lin…
Abstract Das Gleichgewichtsdiagramm Eisen‐Bor wird auf Grund thermischer, mikroskopischer und röntgenographischer Untersuchungen neu entworfen; es gehört der Gruppe von Zweistoffsystemen des Eisens mit verengertem Existenzbereich der γ‐Phase an, bei denen es infolge unzureichender Löslichkeit, nicht, zur Bildung eines…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE HIGH TEMPERATURE EQUILIBRIUM OF TITANIUM DIOXIDE AND CARBON WITH TITANIUM CARBIDE AND CARBON MONOXIDEL. Reed Brantley and Arnold O. BeckmanCite this: J. Am. Chem. Soc. 1930, 52, 10, 3956–3962Publication Date (Print):October 1, 1930Publication History Published online1 Ma…
An analysis is made of the shielding effect of eddy currents on the flux in the interior of cores of cylindrical or flat sheet material. It is shown that the counter voltage of self inductance of an iron-cored coil is due only to the component of flux in the core which is in phase with the flux at the surface of the c…
By the application of the same methods of investigation as those used in the study of the micas,(1) I have determined the structure of the chlorites, a group of minerals morphologically similar but distinctly different in chemical composition. This structure is described in the following paragraphs.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on Glass. VG. S. ParksG. S. ParksMore by G. S. Parks, S. B. ThomasS. B. ThomasMore by S. B. Thomas, and W. A. GilkeyW. A. GilkeyMore by W. A. GilkeyCite this: J. Phys. Chem. 1930, 34, 9, 2028–2034Publication Date (Print):September 1, 1930Publication History Published…
Abstract It was shown in the preceding work that a very dilute solution of balata in an organic solvent contains macromolecules in solution and not micelles. The same is true of rubber. On the basis of these findings it is possible to calculate the molecular weight of rubber and balata from viscosity measurements by m…
The changes of size of iron and nickel at their Curie points are too great to be explained by purely magnetic forces. On Heisenberg's theory of ferromagnetism, magnetization is accompanied by a change in the strength of binding between atoms, and the resulting changes of size of crystals of iron and nickel at their Cu…
The process of magnetization must consist of two parts, first the switching over of the magnetization in small elements of volume from one direction of easiest magnetization to another, and then a gradual change from this direction to that of the applied field. These two stages involve different distortions of the cry…
The pore space in an assemblage of uniform spheres was initially filled with liquid. After very slow drainage the amount of liquid retained by the spheres was experimentally measured. The liquid is retained in the form of rings at the contacts of adjacent spheres. The radii of curvature of the ring surfaces are comput…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSTUDIES ON POLYMERIZATION AND RING FORMATION. V. GLYCOL ESTERS OF OXALIC ACIDWallace H. Carothers, J. A. Arvin, and G. L. DoroughCite this: J. Am. Chem. Soc. 1930, 52, 8, 3292–3300Publication Date (Print):August 1, 1930Publication History Published online1 May 2002Published…
Conditions that are necessary for the precipitation and ignition of magnesium ammonium phosphate, MgNH4P04-6H 2 0, in determinations of phosphorus or magnesium are described, and the temperatures at which the precipitates should be heated to obtain the most reliable results have been determined. In addi- tion, observa…
This paper describes a simple method for specifying the slipperiness of fabrics, by measurement of the coefficient of friction between two pieces of the same material.
In analogy with the method of Zener for the atoms from Li to F, simple rules are set up giving approximate analytic atomic wave functions for all the atoms, in any stage of ionization. These are applied to x-ray levels, sizes of atoms and ions, diamagnetic susceptibility, etc. In connection with ferromagnetism it is s…