A study of a 1-3-2 type piezoelectric composite

Area of Science:

• Materials Science
• Condensed Matter Physics
• Acoustics

Background:

• Piezoelectric composites are crucial for sensor applications.
• Existing materials often face challenges with environmental stability and mechanical interference.
• A need exists for robust piezoelectric materials with tunable properties.

Purpose of the Study:

• To develop and characterize a novel 1-3-2 type piezoelectric composite.
• To investigate its structural stability and piezoelectric properties.
• To assess its suitability for sensor array element fabrication.

Main Methods:

• Fabrication of a 1-3-2 type piezoelectric composite with integrated ceramic framework supports.
• Application of Newnham's series and parallel theory for deducing composite property calculation formulae.
• Experimental measurement of dielectric and piezoelectric constants, resonant frequency, impedance, and static capacity.

Main Results:

• The developed composite exhibits excellent coherence and is resistant to mechanical and thermal influences.
• Theoretical calculations for dielectric and piezoelectric constants closely matched experimental results.
• Element samples demonstrated stable resonant frequency, impedance, piezoelectricity, and static capacity.

Conclusions:

• The novel 1-3-2 type piezoelectric composite demonstrates superior properties and stability.
• The material's characteristics, including acoustic impedance matching, make it suitable for underwater and biomedical applications.
• Its stable performance and ease of design facilitate the development of sensor array elements.