Mechanochemical synthesis of noncentrosymmetric compounds in oxide systems
We study the influence of anomalous anisotropy in the elastic constants of paratellurite (α-TeO2) on the rate of the following mechanochemical reactions: Bi2O3 + SeO2 = BiSeO5; Bi2O3 + TeO2 = Bi2TeO5; SeO2 + TeO2 = TeSeO4. The formation of the following compounds was registered by means of X-ray analysis and thermal annealing: Bi6SeO11, Bi2TeO5, and TeSeO4.