Perovskite-Type Oxides: I. Structural, Magnetic, and Morphological Properties of LaMn1-xCuxO3 and LaCo1CuxO3 Solid Solutions with Large Surface Area

A short range force constant model has been applied to investigate the phonons in YAlO3 perovskite in the orthorhombic phase. The calculations with six stretching and one bending force constants provide a satisfactory agreement for the available Raman frequencies. Based on the present calculations, the infrared frequencies have been assigned for the first time.