Abstract
BaTiO3 based ferroelectric ceramics (with some additives such as ZrO2, SnO2 and ZrO2 etc) were prepared by solid state reaction. Mn2+ or Mn3+ as an acceptor and Nb5+ as a donor substituting for Ti4+ in B site were co-doped in BaTiO3 based ceramics. The effect of the mole ratio of donor and acceptor (Nb/Mn) on the dielectric dispersion properties of BaTiO3 based ceramics co-doped with Nb/Mn was investigated. The Mn = 1.6% mol and Nb = 0, 0.18%, 1.0%, 1.1%, 2.0% mole. The ratio of donor and acceptor increase, dielectric dispersion behavior was observed and the dielectric constant decrease. When Nb varied from 0% to 2.0% mol (Mn = 1.6% mol), remnant polarization from 8.91 to 0.59 μC/cm2, coercive field from 4.5 to 1.1 kV/cm, and piezoelectric constant d33 from 90 to 13 pC/N respectively. The dielectric relaxation behavior of BaTiO3 based ceramics co-doped with Nb/Mn was discussed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
