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- Title
Enhanced Soft Character of Crystallographically Textured Mn-Doped Binary 0.675[Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>]-0.325[PbTiO<sub>3</sub>] Ceramics.
- Authors
Berksoy-Yavuz, Ayşe; Mensur-Alkoy, Ebru
- Abstract
Abstract: Lead magnesium niobate (PMN)-lead titanate (PT) solid solution with composition 0.675 PMN-0.325PT has been obtained with manganese (Mn) doping in various ratios. The effect of Mn on the electrical properties was examined in detail using dry-pressed samples produced from PMN-PT powders synthesized by a solid-state calcination route. Based on the results, 0.7 mol.% was selected as the optimum Mn doping ratio to enhance the soft properties and figure of merit (FOM). Random and textured PMN-PT plates for use in energy harvesting applications were then prepared by a tape-casting method. Samples were textured using 1 vol.% plate-like barium titanate (BaTiO3, BT) template. The calculated FOM of random samples fabricated by tape-casting increased from 8469 × 10−15 m2/N to 11,273 × 10−15 m2/N with Mn doping, in parallel with observations in dry-pressed samples. The FOM of textured PMN-PT was found to be as high as ∼ 25,999 × 10−15 m2/N and increased to ∼ 31,720 × 10−15 m2/N for textured Mn-doped PMN-PT. The Curie temperature (Tc) of samples obtained by tape-casting was measured to be 160°C. The electromechanical properties of the samples were also studied in detail, and property matrices calculated using resonance methods are reported for all compositions.Graphical Abstract: <graphic></graphic>
- Subjects
LEAD magnesium niobate; BARIUM titanate; ELECTRIC properties of barium titanate; MANGANESE; ELECTROMECHANICAL effects; CRYSTALLOGRAPHY
- Publication
Journal of Electronic Materials, 2018, Vol 47, Issue 11, p6557
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-018-6563-4