Investigation of Mn-doped sodium-potassium niobate ((K, Na)NbO3) ceramics by EPR and impedance spectroscopic methods. (8th April 2016)

• Record Type: Journal Article
• Authors: Kaftelen, Hülya; Kanar, D. Emre; Repp, Sergei; Weber, Stefan; Erdem, Emre
• Is Part Of: Ferroelectrics. Volume 494(2016)
• Page Start: 11
• Page End: 18
• Publication Date: 2016-04-08
• Subjects: Sodium-potassium niobate (KNN) ceramics -- electron paramagnetic resonance spectroscopy (EPR) -- impedance spectroscopy; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2016.1120052
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: The effects of Mn-doping on the conductivity and the oxidation state were investigated for (K, Na)NbO3 ceramics with stoichiometric, and 2 mol % A-site and B-site excess compositions. From electron paramagnetic resonance (EPR) and impedance spectroscopy we found that Mn is located at the Nb-site with the oxidation state 2+ and, due to the generation of oxygen vacancies, Mn-doping reduces the conductivity in (K, Na)NbO3 ceramics.