Abstracts Chemistry

Synthesis, X-ray characterization, structural and magnetic studies of a new class of iso-structural BiMO₃ compounds

by Joseph Donato Bucci

"This dissertation consists of four sections. The first part is a temperature dependent X-ray study of the lattice parameters of BiFeo₃. The synthesis and subsequent X-ray characterization of BiCo₃, BiAlO₃, BiMnO₃ , BiScO₃, BiCo[subscript 1-x]Fe[subscript x]O₃ , and BiAl₁₋ₓFeₓO₃ are reported in the second part. These compounds all crystallize in the body centered cubic (BCC) structure with a~10.2Å. Single crystal Precession and Weissenberg photographs confirmed the BCC structure. In part three, the results of the magnetic studies on BiCoO₃ and biAl[subscript .9]FE[subscript .1] are presented. The magnetic data for BiCoO₃ are substantiated by X-ray thermal expansion studies. In the last part the compound BiCo[subscript .9[Fe[subscript .1]O₃ is examined in some detail. The magnetic studies are substantiated by the X-ray thermal expansion results" – Abstract, page iii.