Growth of Crystals: Volume 2

ISBN-13: 9781475704730 / Angielski / Miękka / 2012 / 178 str.

A. V. Shubnikov; N. N. Sheftal'

Opis

The first volume in the present series contained the papers read at the first conference on crystal growth. This second volume appears during the interval between the first and second conferences, and contains various papers on crystal growth, in addition to the late S. K. Popov's major contribution on growing synthetic corundum. The papers to some extent represent work that has been done in the USSR since the first conference. Some of the papers break entirely fresh ground. We hope that the series will act as a means of contact between Soviet scientists who work on crystal growth, or on producing technically important monocrystals. This contact between scientists is essential. Work on this important topic cannot advance unless such con- tact is brought about. A. V. Shubnikov and N. N. Sheftal' vii 1. THEORETICAL AND EXPERIMENTAL INVESTIGATIONS THE THERMODYNAMICS OF CRYSTALLIZATION PRESSURE V. Ya. Khaimov-Mal'kov It has often 1-14] been observed that crystals growing in a medium containing foreign particles repel the particles as well as trap them. Our photographs (Figs. 1,2, and 3) show such repulsion. Lavalle 4] was the first to notice the effect in 1853. There is as yet no agreement in explanation for the effects, nor is there any agree- l ment in data onthe pressures that may occur. Somegive values of 10 kg/ cm or so 3-5. 10], others only a few g/cmt 6,7,12,14]. The latter value has been adopted in monographs on crystal growth l3, 15].

Spis treści

I. Theoretical and Experimental Investigations.- The Thermodynamics of Crystallization Pressure.- Experimental Measurement of Crystallization Pressure.- The Growth Conditions of Crystals in Contact with Large Obstacles.- The Crystallization of Alum from Water in an Ultrasonic Field.- The Adsorption of Thionin Blue by Growing Lead Nitrate Crystals, and the Effects on the Morphology of the Crystals.- The Growth Forms of ThiazineDye Crystals.- The Green and Brown Colors of Synthetic Quartz Crystals.- The Crystallization of KI in Contact with Biotite and Muscovite.- Determination of Surface Energies of Crystals from Equilibrium States.- II. Growing Monocrystals (Apparatus, Methods, and Acessory Operations).- Growing Calcite and Other Carbonates.- Growing Monocrystals of Anthracene.- The Orientations of Monocrystals of Certain Ferrites.- Crystallization of Ferrites from Liquid and Vapor Phases.- The Growth of Barium Titanate Crystals from a Barium Chloride Melt.- A Crystallizer for Growing Organic Crystals from the Melt.- A New Type of Pistonless Compressor for Producing Very High Gas Pressures.- The Growth and Morphologic Symmetry of Benzophenone Crystals.- Synthesis of Especially Pure Calcium and Barium Fluorides for Growing Optical Monocrystals.- The Effects of Cooling Conditions on the Formation of Dislocations in Germanium Crystals.- Guanidine Aluminum Sulfate Hexahydrate. Synthesis, Properties, and Monocrystal Growth. (Preliminary Communication).- The Crystallization of Germanium on Silicon and of Silicon on Germanium.- The Growth and Uses of Gem-Grade Corundum Crystals.- III. Review and Discussion Articles.- Dislocations in Germanium Monocrystals (Review).- The Main Trends in the Study of Inorganic Crystals Containing Organic Impurities (Review).- The Theory of the Crystallization of Steel.