Structure-property correlation of Ba1-xCuxBi2(Nb1-xTax)2O9 ferroelectric nano ceramics prepared by chemical route

The Effect of Pr Doping Contents on the Structural, Microstructure and Dielectric Properties of BaBi2Nb2O9 Aurivillius Ceramics

“…For the highest amount of modifier, the γ achieved smaller values; however, it never returns to its original value for pure BBN ceramics. The same upward trend in the parameter g was also observed in the case of simultaneous doping of BBN ceramics with Cu and Ta [33] ions [34]. This allows us to speculate that the praseodymium ions, in contrast to vanadium ones [35], enhance the disorder of the crystal lattice [30], which should also influence the frequency dispersion observed in the BBN ceramics.…”

Archives of Metallurgy and Materials

“…The discussed material has a common interesting feature which is crucial for the investigations described in the paper. Namely, worldwide literature reports the effect of shrinking lack -the replacement of barium, strontium or niobium ions by the ones possessing significantly smaller ionic radius, should be reflected by a gradual reduction of crystal lattice parameters [15][16][17]. However, the author of papers [18,19] reports that for the lower contents of dopants, the crystal parameters remain unchanged.…”