Evolution of long-range and short-range order in La0.67Ca0.33MnO3-δ during solid-state transformation using high-energy ball milling

Abstract

A novel processing scheme has been developed that allows for the single step processing of nanostructured complex oxides. This approach involves the high energy ball-milling (HEBM) of binary oxide precursors to form pure phase complex oxides at low-temperatures. Using this technique we have prepared La0.67Ca0.33MnO3-δ and studied the evolution of short range and long-range order, using EXAFS and XRD respectively, as a function of milling time during the solid state transformation. Transport properties of the milled perovskites are also discussed.