Details

Autor(en) / Beteiligte

• Aksel, Elena
• Jakes, Peter
• Erdem, Emre
• Smyth, Donald M.
• Ozarowski, Andrew
• van Tol, Johan
• Jones, Jacob L.
• Eichel, Rüdiger-A.

Titel

Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering

Ist Teil von

• Journal of the American Ceramic Society, 2011-05, Vol.94 (5), p.1363-1367

Ort / Verlag

Malden, USA: Blackwell Publishing Inc

Erscheinungsjahr

2011

Link zum Volltext

Quelle

Wiley-Blackwell subscription journals

Beschreibungen/Notizen

• The effect of multivalent manganese doping on the defect structure is studied for the “lead‐free” piezoelectric [Bi0.5Na0.5]TiO3 (BNT) by means of high‐frequency electron paramagnetic resonance (EPR) spectroscopy. The results show that manganese is incorporated with di‐ and trivalent oxidation states on a titanium site, acting as an acceptor (Mn′Ti, Mn′′Ti). In particular, it is demonstrated that during calcination at 800°C the manganese functional centers are oxidized to Mn3+. Subsequent to the sintering at 1100°C, part of the trivalent manganese centers are reduced back to the initial Mn2+‐oxidation state.