Manganese-doping enhanced local heterogeneity and piezoelectric properties in potassium tantalate niobate single crystals.

ABSTRACT: Ion doping, an effective way to modify the nature of materials, is beneficial for the improvement of material properties. Mn doping exhibits gain of piezoelectric properties in KTa_1-x Nb _x O₃ (KTN). However, the impact mechanism of Mn ions on properties remains unclear. Here, the effects of Mn doping on local heterogeneity and piezoelectric properties in KTN are studied. The electric field-induced strain of Mn-doped KTN is ∼0.25% at 10 kV cm^-1, 118% higher than that of pristine KTN. Meanwhile, as a result of Mn doping, the dielectric permittivity was tripled and the ferroelectricity was modified. The changes in A₁(2TO), B₁ + E(3TO) and E(4TO) vibrations characterized by Raman spectra indicate increased local po

SUBMITTER: Wang Y 

PROVIDER: S-EPMC7924224 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature