Correlation between mechanochemical reactivity forming ABO4-type complex oxides and the structures of product materials

Through the experiments for syntheses of ABO(4) (A: Al, Fe, Cr. In, La, Bi: B: P, V. Nb, Sb), investigations on the relation between mechanochemical reactivity and (I): the crystal structure of starting materials or (II): the crystal structure of product materials has been conducted. It has been found that it is a necessary condition to use structurally active substances against milling operation for the occurrence of a mechanochemical reaction. In addition, it is easier to facilitate a mechanochemical reaction to form ABO(4)-tYpe oxide which is of larger size of cation and in denser structural state. (C) 2009 Elsevier B.V. All rights reserved.