Influence of barium and strontium atoms on magnetic properties of iron-containing solid solutions Bi2MNb2O9 (M – Ba, Sr)

Add time:07/29/2019    Source:sciencedirect.com

Magnetic dilution and NEXAFS spectroscopy were used in the study of iron-containing solid solutions Bi2MNb2O9 (M – Ba, Sr) with layered perovskite-like structure. The analysis of the NEXAFS Fe2p-spectra of iron-containing solid solutions and iron oxides revealed that the studied Fe atoms were mainly in the +3 oxidation state. The study of magnetic susceptibility of the Bi2Ba(Sr)Nb2−2xFe2xO9−δ solid solutions showed the influence of atoms of the second coordination sphere on the distribution, degree of clustering, and intensity of exchange interactions in clusters of iron atoms. It was established that iron (III) atoms exhibited selectivity in filling the cation positions, preferring less distorted octahedral positions. The substitution of barium with strontium atoms led to intensification of the exchange of the ferromagnetic type and to a decrease in the degree of clustering of iron atoms in the solid solutions Bi2SrNb2−2xFe2xO9−δ.

We also recommend Trading Suppliers and Manufacturers of BARIUM NIOBIUM OXIDE (cas 12009-14-2). Pls Click Website Link as below: cas 12009-14-2 suppliers

Prev:On the synthesis and the electric and magnetic properties of superconducting barium–niobium–oxide compounds
Next:Liquid phase photooxidation of alcohol over niobium oxide without solvents)