Vs. Nikolayev, TWIN SPACING VERSUS SIZE OF A MONOCRYSTAL FOR THE NONSTOICHIOMETRIC 1-2-3 SUPERCONDUCTORS, Physics letters. A, 180(1-2), 1993, pp. 157-163
A theoretical model describing the formation of 90-degrees structural
twins is proposed. The dependence of the twin spacing versus the size
of a monocrystal differs from the classical square root law as a resul
t of a nonstoichiometry of the compound. According to the model the tw
in boundaries are depleted of oxygen.