Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 35, Pages 8804-8811Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.06.080
Keywords
Ferroelectrics; Solid state reaction; Piezoelectricity; X-ray diffraction
Categories
Funding
- MICINN (Spain) [MAT 2010-21088-C03-01]
- SIMUFER network [MP0904]
- Conseil Regional du Limousin
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Mn2+-doped (K,Na,Li)(Nb,Ta,Sb)O-3 lead-free piezoelectric ceramics have been prepared by a conventional sintering technique. The effects of Mn2+ doping on the phase structure, microstructure and ferro-piezoelectric properties of the ceramics have been evaluated. MnO doping modifies the (K,Na,Li)(Nb,Ta,Sb)O-3 structure, giving rise to the appearance of a TTB-like secondary phase and to changes on the orthorhombic to tetragonal phase transition temperature. The modification of this temperature induces a reduction of the piezoelectric constants, which is accompanied by an increase on the mechanical quality factor. Mn2+ ions incorporate into the perovskite structure in different off ways depending on their concentration. (c) 2011 Elsevier B.V. All rights reserved.
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