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- W2969666352 abstract "K.51Na.49Nb1−xTaxO3 (0.05 ≤ x ≤ 0.30) ceramics were prepared using a conventional solid-state sintering route. XRD of this system showed the crystal structure shifted gradually from orthorhombic to tetragonal phase. SEM images revealed that grain morphology remained the same in all compounds. At room temperature, relative permittivity has its highest value at x = 0.20, while tanδ remained less than 5% for all compositions at 100 kHz. For x > 0.05, double peaks were observed in relative permittivity versus temperature data. Saturated and symmetrical ferroelectric loops were obtained at an applied electric field of 60 kV cm−1. Remanent polarization (Pr) decreased with increasing x, however coercive field (Ec) was almost independent of composition. Isovalent doping of Ta5+ () marginally improved d33 at low concentrations (i.e., maximum d33 = 135pC/N, at x = 0.10). However, the broadening of peaks observed in dielectric data due to inhomogeneity may open new applications in microwave dielectrics or relaxor type applications in smart ceramics." @default.
- W2969666352 created "2019-08-29" @default.
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- W2969666352 date "2019-08-30" @default.
- W2969666352 modified "2023-09-26" @default.
- W2969666352 title "Effect of Ta-doping on functional properties of K<sub>0.51</sub>Na<sub>0.49</sub>NbO<sub>3</sub>" @default.
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- W2969666352 doi "https://doi.org/10.1088/2053-1591/ab3d49" @default.
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