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| 1 | Impedance and ferroelectric properties of Sr^(2+) modified PZT-PMN ceramics显示文摘Sr2+ modified polycrystalline PZT-PMN ceramics were synthesized by a semi-wet route. Impedance spectroscopy studies indicate the bulk and grain boundary effects of PZT-PMN material along with the negative temperature coefficient of resistance. The bulk conductivity exhibits an Arrhenius-type thermally activated hopping process which is supported by the AC conductivity behavior as a function of frequency and temperature. It is observed that the remnant polarization increases with an increase in the Sr2+ content in PZT-PMN. | Arvind Kumar S.K.Mishra | 2014 | International Journal of Minerals,Metallurgy and Materials2014，21，6： | 0 |
| 2 | Dielectric, piezoelectric, and ferroelectric properties of lanthanum-modified PZTFN ceramics显示文摘Specimens of Pb1-1.5xLax(Zr0.53Ti0.47)1–y–zFeyNbzO3(x = 0, 0.004, 0.008, 0.012, and 0.016, y = z = 0.01)(PZTFN) ceramics were synthesized by a semi-wet route. In the present study, the effect of La doping was investigated on the structural, microstructural, dielectric, piezoelectric, and ferroelectric properties of the ceramics. The results show that, the tetragonal(space group P4mm) and rhombohedral(space group R3c) phases are observed to coexist in the sample at x = 0.012. Microstructural investigations of all the samples reveal that La doping inhibits grain growth. Doping of La into PZTFN improves the dielectric, ferroelectric, and piezoelectric properties of the ceramics. The hysteresis loops of all specimens exhibit nonlinear behavior. The dielectric, piezoelectric and ferroelectric properties show a maximum response at x ≥ 0.012, which corresponds to the morphotropic phase boundary(MPB). | Arvind Kumar S.K.Mishra | 2014 | International Journal of Minerals,Metallurgy and Materials2014，21，10： | 0 |
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