Melting incongruent state

Interest in both liquid-state and solution chemistry of the silicates has been maintained during the period of this Report. Esin has carried out theoretical analyses of the stability of compounds316 and the distribution317 of and polymerization318 of anions in silicate melts. The incongruent melting of many silicates has been explained in terms of the distribution and composition of silicate anions.316-318 The densities of melts in the systems... 

Even when the growth of single crystals for structural characterization was difficult for some of the compoimds whose existence was indicated in the phase diagrams subject to incongruent melting, sometimes decomposition in the solid state and solid/solid phase transitions, it is believed that practically all crystal structure types are now known so that we can draw a comprehensive picture. Emphasized are recent developments. 

Conversion of Melting State of Langasitefiom Incongruent to Congruent 395... 

Conversion of Melting State of Langasite from Incongruent to Congruent [16]... 

Analytical Solution of the Electric Field Required for the Transformation from Incongruent-Melting State of Langasite to Congruent... 

Conversion of Melting State of Langasitefrom Incongruent to Congruent 397... 

Liquid mixtures freeze at lower temperatures than the pure components of which they are comprised. The lowest possible temperature in which we only have liquid is called the eutectic point. The presence of solid compounds of stoichiometry aj y increases the complexity of their phase diagrams. A compound with a definite melting point is termed congruent, while a compound that is not stable all the way up to a well-defined melting point is said to have an incongru-ent melting point. The state at which the latter case dissociates is called the peritectic point. 

---