Abstract
Room temperature multiferroism with enhanced ferro and piezoelectric properties of a new lead-free MnO2 added 0.90(Li0.12Na0.88NbO3)-0.10BaTiO3 ceramic is reported. The addition of MnO2 as an additive resulted in a two fold increase in remnant polarization (Pr) (from ~7.30 to 17.20μC/cm2), ~50% increase in large-signal piezoelectric coefficient (d33∗) (from ~117 to176pm/V) and symmetric butterfly loop are observed. Phase analysis revealed that MnO2 entered the host lattice as Mn2+ and Mn4+-ions and induced room temperature ferromagnetic-like character. Interestingly, an intrinsic coupling between the two ferroic orders is evidenced by the observation of a magneto-electric voltage coefficient (αE) of ~0.94mV/cm.Oe.
Published Version
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