Crystallographic and Magnetochemical Studies on ABO3Group Compounds of Lanthanon and Manganese Oxides

摘要

Perovskitehyphen;structured compounds have been prepared containing manganese oxide with praseodymium, neodymium, and dysprosium oxides. Xhyphen;ray crystallographic data have been obtained for these compounds, and unit cell edge values of 3.82, 3.80, and 3.70 A are found for PrMnO3, NdMnO3, and DyMnO3, respectively. Magnetic susceptibilities of these compounds have been measured down to liquidhyphen;air temperatures and gram susceptibilities found to range from 40ndash;158 above those indicated by additive values for the component oxides, highest increments being found in praseodymium systems. Susceptibility curves follow the Curiehyphen;Weiss law without deviation, and Weiss constants of 115, 112, and 62 have been found for the praseodymium, neodymium, and dysprosium compounds, respectively.