Аннотации:
Today, one of the most promising materials for a wide range of practical applications is
lithium-containing ceramics based on Li2TiO3
. At the same time, despite the high potential of their
practical application, a number of questions remains related to the methods of their preparation, as
well as the formation of a stable crystal structure and a pure-phase composition. To solve these issues,
this paper proposes a method for obtaining stable Li2TiO3 ceramics, which is based on solid-phase
synthesis combined with the high-temperature sintering of ceramics. During the studies carried
out using X-ray diffraction methods, temperature dependences of phase transformations of the
TiO2/Li2Ti6O13 → Li2TiO3
type were determined, according to which, at temperatures above 800 ◦C,
the formation of a stable Li2TiO3 phase characterized by a high structural ordering degree of 89–91%
is observed. The dependence of changes in structural, optical and ferroelectric characteristics on the
conditions of synthesis and phase composition of ceramics was also determined.
