A HREM STUDY ON LA1/3SR2/3FEO3-Y .1. (0-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-0.10)

摘要

The microstructural study of the La1/3Sr2/3FeO3-y system by electron diffraction and microscopy shows that for the y = 0.1 composition, La and Sr are ordered in small domains preserving the 1:2 ratio and following a sinusoidal modulation. This ordered state disappears when no oxygen vacancies are present (y = 0), the material presenting a small rhombohedral distortion. (C) 1996 Academic Press, Inc. [References: 16]