Published February 2009 | Version v1
Journal article Metadata-only

KNN Based Lead-Free Piezoceramics with Improved Thermal Stability

Creators

  • 1. School of Physics, State Key laboratory of Crystal Materials, Shandong University, Jinan 250100 (China)
  • 2. College of Physics Science and Technology, China University of Petroleum, Dongying 257061 (China)
  • 3. College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059 (China)

Description

Lead-free piezoelectric ceramics (1 − x)(Na0.53 K0.404 Li0.066) Nb0.92 Sb0.08 O3+x SrTiO3 are fabricated by conventional solid-state sintering method, and their dielectric and piezoelectric characteristics are investigated. With the addition of SrTiO3, the growth of the grain size is restrained, meanwhile the phase transition temperature of orthorhombic-tetragonal is shifted below room temperature. It is found that the ceramics with x = 0.010 exhibit excellent piezoelectric properties (d33 = 220 pC/N, kp = 41%, kt = 39%) and improved thermal stability around room temperature. The results indicate that these materials are promising lead-free piezoceramics for practical operations

Availability note (English)

Available from http://dx.doi.org/10.1088/0256-307X/26/2/027701

Additional details

Identifiers

DOI
10.1088/0256-307X/26/2/027701;

Publishing Information

Journal Title
Chinese Physics Letters
Journal Volume
26
Journal Issue
2
Journal Page Range
[4 p.]
ISSN
0256-307X
CODEN
CPLEEU

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44124121
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CERAMICS; CONCENTRATION RATIO; DIELECTRIC MATERIALS; GRAIN GROWTH; GRAIN SIZE; ORTHORHOMBIC LATTICES; PHASE STABILITY; PHASE TRANSFORMATIONS; PIEZOELECTRICITY; SINTERING; SOLIDS; STRONTIUM TITANATES; TEMPERATURE RANGE 0273-0400 K; TETRAGONAL LATTICES; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIMENSIONLESS NUMBERS; ELECTRICITY; FABRICATION; MATERIALS; MICROSTRUCTURE; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SIZE; STABILITY; STRONTIUM COMPOUNDS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS