Materials Literature
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The phase transition and the crystal structures of cuprous iodide (CuI) have been studied by the X-ray and calorimetric measurement Two phase transitions at 369°C and 407°C were found and the corresponding energy and entropy changes were estimated from the specific heattemperature curve. The crystal lattice of γ, β an…
R. P. Linstead and M. Whalley, J. Chem. Soc., 1952, 4839 DOI: 10.1039/JR9520004839
The phase diagram of the whole range of the PbZrO 3 -PbTiO 3 system was determined by the dielectric and dilatometric measurements. According to the reason shown in part I, this phase diagram can be divided into three regiors; paraelectric, ferroelectric and antiferroelectric phases. The crystal structure of this syst…
D. H. Everett and W. I. Whitton, Trans. Faraday Soc., 1952, 48, 749 DOI: 10.1039/TF9524800749
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The dielectric, calorimetric and dilatometric measurements have been made on the solid solutions Pb(Zr-Ti)O 3 which contain small amounts of PbTiO 3 less than 10%. Besides the ordinary Curie point near 220°C, the existence of another transition, for example 140°C in Pb(Zr95-Ti5)O 3 , was confirmed. It seems reasonable…
A yellow color is produced when two colorless pure liquids, α-chloronaphthalene and ethyl iodide, are mixed, although no chemical reaction occurs. Spectroscopic examination reveals that the lowest singlet→triplet absorption band of the naphthalene molecule is greatly enhanced in intensity in the presence of the iodide…
Mixed electronic and ionic conduction in silver sulfide is examined. The importance of terminal conditions which may affect the ratio of ionic to electronic currents in experimental measurements is emphasized. In particular, either the electronic or ionic components can be completely suppressed. This is the basis of a…
Synopsis The preferred orientation of uranium bars hot-rolled and cold-rolled in the α range has been determined quantitatively by x-ray diffraction using a Geiger counter. It is shown that hot rolling with a slight reduction causes the 010 planes to become strongly and the 110 planes weakly oriented perpendicular to…