Effect of MnO doping on the structure, microstructure and electrical properties of the (K,Na,Li)(Nb,Ta,Sb)O3 lead-free piezoceramics

被引：44

作者：

Rubio-Marcos, F. ^{[1
]}

Marchet, P. ^{[1
]}

Vendrell, X. ^{[2
]}

Romero, J. J. ^{[3
]}

Remondiere, F. ^{[1
]}

Mestres, L. ^{[2
]}

Fernandez, J. F. ^{[3
]}

机构：

[1] Univ Limoges, Lab Sci Proc Ceram & Traitements Surface, CNRS, UMR 6638,Ctr Europeen Ceram, F-87068 Limoges, France

[2] Univ Barcelona, Dept Quim Inorgan, Grp Quim Estat Solid, E-08028 Barcelona, Spain

[3] CSIC, Electroceram Dept, Inst Ceram & Vidrio, E-28049 Madrid, Spain

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 35期

关键词：

Ferroelectrics; Solid state reaction; Piezoelectricity; X-ray diffraction; FREE PIEZOELECTRIC CERAMICS; SINTERING AID; LI; TEMPERATURE; TA;

D O I：

10.1016/j.jallcom.2011.06.080

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：8804 / 8811

页数：8

共 39 条

[1] ATOMIC DISPLACEMENT RELATIONSHIP TO CURIE TEMPERATURE AND SPONTANEOUS POLARIZATION IN DISPLACIVE FERROELECTRICS [J].