Single crystals of rare‐earth (La‐Nd, Sm, Gd) and Y dititanates have been grown either by the method of direct high frequency heating in cold container or/and floating zone optical technique. The crystals Ce2Ti2O7 and Pr2Ti2O7 belong to the structural type of Ca2Nb2O7 and possess dielectric and optic characteristics which are very similar to that of known ferroelectrics La2Ti2O7 and Nd2Ti2O7.
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Захаров et al. (1980) studied this question.
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