Decomposition of TiO2-SnO2 solid solutions

The effects of the spinodal microstructure on the electrical properties of TiO2–SnO2 ceramics

“…After annealing for 48 h, it is seen that the SnO 2 and TiO 2 phases had completely separated and moreover the original solid solution (011) peak completely disappeared. The XRD results of this work agree well with other workers which studied the phase decomposition of this system by using both XRD and TEM [12,14,19].…”

“…In other work, Park et al [14] used large angle X-ray diffraction (LAXD), small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM) and electron diffraction to study the decomposition of TiO 2 -SnO 2 and characterized the spinodal structure of this system. The results of their work indicated that compositions within the spinodal region decompose by a continuous and spontaneous process, whereas compositions outside the spinodal decompose by a discontinuous and non-spontaneous process.…”

Phase transformations and microstructures of TiO2–SnO2 due to solution annealing versus reactive sintering

“…This binary system has a nearly symmetric miscibility gap for spontaneous spinodal decomposition, [1][2][3][4][5] with the critical composition 47 ± 2 mol% TiO 2 at 1430 ± 5 • C according to the updated phase diagram. 4 The experimental results 2,3 showed that the decomposition of equimolar TiO 2 -SnO 2 alloy produces composition fluctuation along [0 0 1], and theoretical calculation indicated the spinodal is 105 • C below the solvus.…”

Thermoelectric Properties of Undoped and Doped (Ti0.75Sn0.25)O2

“…In addition to temperature, the spinodal decomposition rate can be enhanced by acceptor cation doping and inhibited by donor cation doping. [5][6][7][8][9] Spinodal decomposition has been widely studied but limited information is reported on the (Sn x Ti 1Àx )O 2 alloy properties and the nucleation and growth region.…”