Premium
Coherent Phase Diagram for Spinodal Decomposition in the Tetragonal Titanium Dioxide—Tin Oxide System
Author(s) -
Nambu Shinji,
Oiji Masaki
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb07808.x
Subject(s) - binodal , spinodal decomposition , spinodal , phase diagram , tetragonal crystal system , thermodynamics , materials science , elastic energy , phase (matter) , surface energy , regular solution , tin , solid solution , diagram , condensed matter physics , chemistry , physics , metallurgy , mathematics , statistics , organic chemistry
A microscopic calculation was carried out for spinodal decomposition in the tetragonal TiO 2 —SnO 2 system by taking into account the contribution of the elastic free energy. Necessary elastic constants for the solid solutions and the elastic free energy of modulated structure were calculated in terms of interatomic potentials. A coherent phase diagram was obtained unambiguously from the calculated elastic free energy by using the interaction parameter determined by the experimental binodal line. The results were compared with the calculation based on the regular‐solution model.