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Electrical properties, EPR analyses and defect chemistry of Mn-doped 0.675PMN-0.325PT piezoceramics

Berksoy-Yavuz, Ayse; Mensur-Alkoy, Ebru; Erdem, Emre; Alkoy, Sedat


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    "creators": [
      {
        "name": "Berksoy-Yavuz, Ayse"
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      {
        "affiliation": "Gebze Tech Univ, Dept Mat Sci & Engn, TR-41400 Kocaeli, Turkey", 
        "name": "Mensur-Alkoy, Ebru"
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      {
        "name": "Erdem, Emre"
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      {
        "affiliation": "Gebze Tech Univ, Dept Mat Sci & Engn, TR-41400 Kocaeli, Turkey", 
        "name": "Alkoy, Sedat"
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    "description": "The morphotropic phase boundary solid solution of 0.675Pb(Mg1/3Nb2/3)O-3 -0.325PbTiO(3) (0.675PMN-0.325PT) were studied. Manganese (Mn) was used as a dopant element in 0.4 mol% and 0.7 mol% ratios because of its multiple oxidation states. Sintering was done either in the air or under an oxygen-rich atmosphere. Both the effect of doping and sintering atmosphere on the electrical properties were reported. The ceramic with 0.4 mol% were exhibited higher properties such as piezoelectric charge coefficient (d(33)), dielectric constant, polarization values compared to undoped and 0.7 mol% Mn-doped ceramics. Electron paramagnetic resonance (EPR) spectroscopy was used to resolve the oxidation state of Mn in the 0.675PMN-0.325PT structure. The electrical properties were discussed and explained using defect chemistry.", 
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      "issue": "18", 
      "pages": "28980-28986", 
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