In-situ reaction and texture development were investigated during heat treatment in reactive templated grain growth (RTGG) processing for textured SrTiO3 (ST) ceramics. Platelike Sr3Ti2O7 (S3T2) particles were used as a template and aligned S3T2 particles were heat-treated with stoichiometrically required amounts of TiO2 for textured ST ceramics. The sintered ceramics exhibited uniaxial ‹100› orientation and the degree of orientation reached was 0.43 (Lotgering's factor). X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses revealed that an S3T2 single-crystal template was converted into an ST polycrystal with its outer shape maintained. The following grain growth mechanism of converted ST caused a marked increase in the degree of orientation.
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Takeuchi et al. (2002) studied this question.