Perovskite lithium and bismuth modified potassium-sodium niobium lead-free ceramics for high temperature applications
Creators
- 1. The College of Science, Air Force Engineering University, Xi'an 710051 (China)
- 2. Electronic Materials Research Laboratory, Key Laboratory of Educational Ministry, Xi'an Jiaotong University, Xi'an 710049 (China)
- 3. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072 (China)
Description
[(K(1-x)/2Na(1-x)/2Lix)1-3yBiy]NbO3 (abbreviated as KNLBN) ceramics were prepared by conventional solid-state sintering. The addition of Li+ and Bi3+ makes the orthorhombic-tetragonal phase transition temperature (TO-T) decrease from 200 deg. C for pure (K0.5Na0.5)NbO3 ceramics to -10 deg. C for KNLBN ceramics (x=0.06, y=0.005), while maintaining high Curie temperature (TC=455 deg. C) and piezoelectric properties (d33=185 pC/N, kp=0.43, kt=0.45, ε33T/ε0=1020, and tan δ=0.023) at room temperature. In addition, good temperature stability of electrical properties is obtained in KNLBN ceramics (x=0.06, y=0.005) owing to the decrease of TO-T. These results indicate that KNLBN (x=0.06, y=0.005) ceramic is a promising lead-free piezoelectric candidate material for high temperature applications
Additional details
Identifiers
- DOI
- 10.1063/1.2800793;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 91
- Journal Issue
- 18
- Journal Page Range
- p. 182909-182909.3
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39035952
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BISMUTH COMPOUNDS; BISMUTH IONS; CERAMICS; CURIE POINT; ELECTRICAL PROPERTIES; LITHIUM COMPOUNDS; LITHIUM IONS; NIOBATES; ORTHORHOMBIC LATTICES; PEROVSKITE; PHASE TRANSFORMATIONS; PIEZOELECTRICITY; POTASSIUM COMPOUNDS; SINTERING; SODIUM COMPOUNDS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TETRAGONAL LATTICES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CHARGED PARTICLES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELECTRICITY; FABRICATION; IONS; MINERALS; NIOBIUM COMPOUNDS; OXIDE MINERALS; OXYGEN COMPOUNDS; PEROVSKITES; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE
Optional Information
- Notes
- (c) 2007 American Institute of Physics