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

Berksoy-Yavuz, Ayse and Mensur-Alkoy, Ebru and Erdem, Emre and Alkoy, Sedat (2020) Electrical properties, EPR analyses and defect chemistry of Mn-doped 0.675PMN-0.325PT piezoceramics. Ceramics International, 46 (issue ). pp. 28980-28986. ISSN 0272-8842 (Print) 1873-3956 (Online)

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Abstract

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.
Item Type: Article
Uncontrolled Keywords: PMN-PT, Sintering, Electrical properties, Electron paramagnetic resonance (EPR)
Subjects: Q Science > QD Chemistry > QD450-801 Physical and theoretical chemistry
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Emre Erdem
Date Deposited: 24 Aug 2021 11:24
Last Modified: 26 Apr 2022 10:26
URI: https://research.sabanciuniv.edu/id/eprint/41866

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