Oxygen Nonstoichiometry and Crystal and Defect Structure of PrMnO3+y and NdMnO3+y

Phase Equilibria in the La–Sr–Mn–O System

“…It has been shown (27) The possibility of cation nonstoichiometry in strontium-doped lanthanum manganates that can be described by the formula (La \V Sr V ) \W MnO $ in air in the temperature range 800-1200°C has been reported (19). The value of y decreased from 0.15 to 0 with an increase in strontium content (x) from 0 to 0.4.…”

Crystal growth, transport and magnetic properties of rare-earth manganite

“…X-ray diffraction patterns of the powdered crystals were recorded using a Philips X-ray generator (X'Pert) with CuKa radiation. The parent compound PrMnO 3 is orthorhombic with space group Pbnm [11]. The Goldschmidt tolerance factor t G is 0.99 for Pr 0:7 Pb 0:3 MnO 3 , which implies a cubic symmetry.…”

Magnetic structure in the segregated phases Nd0.93MnO2.96

“…Cherepanov et al [32] showed that similarly a slow oxygen excess can be achieved in NdMnO 3 system which corresponds to equal cation site vacancies of the order of 5% with an orthorhombic structure close to NdMnO 3 . Very good agreement was found for composition determined from combined thermogravimetry analysis (TGA) and chromatic titration with the composition obtained from PND.…”