Structure and hyperfine interactions in Aurivillius Bi9Ti 3Fe5O27 conventionally sintered compound

Abstract

The structure and hyperfine interactions in the Bi9Ti 3Fe5O27 Aurivillius compound were studied using X-ray diffraction and Mössbauer spectroscopy. Samples were prepared by the conventional solid-state sintering method at various temperatures. An X-ray diffraction analysis proved that the sintered compounds formed single phases at temperature above 993 K. Mössbauer measurements have been carried out at room and liquid nitrogen temperatures. Room-temperature Mössbauer spectrum of the Bi9Ti3Fe5O27 compound confirmed its paramagnetic properties. However, low temperature measurements revealed the additional paramagnetic phase besides the antiferromagnetic one.