Magnetization Studies and Possible Magnetic Structure of Barium Ferrate III

Abstract

An approach to the absolute saturation magnetization of polycrystalline, magnetically hard BaO·6${\mathrm{Fe}}_2$ ${\mathrm{O}}_3$ has been achieved by using magnetic fields up to 60 000 gauss and temperatures down to 1.3°K where the saturation magnetization and remanence (about one-half of the saturation magnetization) have become temperature-independent. The magnetization in the highest fields is approaching 1.64 Bohr magnetons per atom of Fe at 1.3°K and 1.13 at 295°K. Inferences are drawn as to a possible magnetic structure from such a saturation magnetization. A sample displacement ballistic technique is used.