Published January 15, 2008 | Version v1
Journal article Metadata-only

Effects of K content on the dielectric, piezoelectric, and ferroelectric properties of 0.95(KxNa1-x)NbO3-0.05LiSbO3 lead-free ceramics

Creators

  • 1. Department of Materials Science, Sichuan University, Chengdu 610064 (China)
  • 2. Department of Materials Science, Sichuan University, Chengdu 610064 (China) and College of Materials Science and Metallurgy Engineering, Guizhou University, Guizhou 550003 (China)

Description

The effects of K content on the dielectric, piezoelectric, and ferroelectric properties of 0.95(KxNa1-x)NbO3-0.05LiSbO3 (0.95KxNN-0.05LS) (x=0.25-0.75) lead-free piezoelectric ceramics prepared by conventional solid-state sintering were studied. The experimental results show that the dielectric, piezoelectric, and ferroelectric properties strongly depend on K content in the 0.95KxNN-0.05LS ceramics. The 0.95KxNN-0.05LS (x=0.40) ceramics exhibit enhanced electrical properties (d33≅280 pC/N; kp≅49.4%; Tc∼364 deg. C; To-t=25 deg. C; εr≅1463; tan δ≅2.3%; Pr∼30.8 μC/cm2; Ec∼14.0 kV/cm). The enhanced electrical properties of 0.95KxNN-0.05LS (x=0.40) ceramics are attributed to the polymorphic phase transition near room temperature. These results show that 0.95KxNN-0.05LS (x=0.40) ceramic is a promising lead-free piezoelectric material

Additional details

Identifiers

DOI
10.1063/1.2830997;

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
103
Journal Issue
2
Journal Page Range
p. 024102-024102.4
ISSN
0021-8979
CODEN
JAPIAU

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39079488
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANTIMONATES; CERAMICS; ELECTRICAL PROPERTIES; FERROELECTRIC MATERIALS; LITHIUM COMPOUNDS; NIOBATES; PHASE TRANSFORMATIONS; PIEZOELECTRICITY; POTASSIUM COMPOUNDS; SINTERING; SODIUM COMPOUNDS; TEMPERATURE RANGE 0273-0400 K
Descriptors DEC
ALKALI METAL COMPOUNDS; ANTIMONY COMPOUNDS; DIELECTRIC MATERIALS; ELECTRICITY; FABRICATION; MATERIALS; NIOBIUM COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
(c) 2008 American Institute of Physics