Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Double Atmospheric Layer Sintering Method for PZT Based Materials
Categories for this Invention
Category- Advanced Materials and Ceramics
Applications – Ultrasonic Transducers, Sensors and Actuators, Energy Harvesting
Industry – Electronics Manufacturing
Market – Lead Zirconate Titanate (PZT) market is projected to reach US$ 765 million by 2032, expanding at a rapid CAGR of 8%.
Image Gallery
Problem Statement
- Lead-based ferroelectric materials, such as lead zirconium titanate (PZT), are widely used in various applications due to their superior properties, but face challenges during sintering processes where lead evaporates as PbO, affecting material properties.
- Current methods for sintering PZT bulk materials, including conventional techniques and advanced methods like pulsed laser deposition (PLD), struggle to prevent lead loss at high temperatures, limiting the material’s performance and reliability.
- There is a need for a sintering method that can efficiently prevent lead evaporation during the sintering process, thereby enhancing the properties and reliability of PZT.
Technology
The invention relates generally to a sintering method and in particular to preparing lead zirconium titanate bulk materials.
Method:
- Novel Sintering Method: The disclosed method introduces a novel approach to sintering lead zirconium titanate (PZT) materials, utilizing a crucible with multiple chambers and specific compositions of PbO in each chamber to prevent lead loss during heating, thereby enhancing material properties and reliability.
- Enhanced Material Performance: By controlling the composition and sintering process parameters, the resulting PZT material exhibits desirable properties such as high polarization, low dielectric loss, and high Curie temperature, making it suitable for various applications in dielectric and ferroelectric devices.
Key Features / Value Proposition
Advanced Sintering Methodology:
- Introduces a novel sintering method for lead zirconium titanate (PZT) materials, optimizing PbO compositions to prevent lead loss during heating.
Tailored Material Properties:
- Enables precise control over PZT material properties such as polarization, dielectric constant, and Curie temperature, catering to diverse application requirements.
High Performance Dielectrics:
- Offers PZT materials with exceptional dielectric properties, including low dielectric loss and high dielectric constant, ensuring efficient energy storage and signal transmission.
Enhanced Ferroelectricity:
- Facilitates the development of PZT materials with superior ferroelectric characteristics, leading to high polarization and remnant polarization for improved device performance.
Temperature Resilience:
- Provides PZT materials with high Curie temperature, enabling operation in broad temperature ranges, enhancing reliability in harsh environmental conditions.
Versatile Applications:
- Enables the creation of PZT materials suitable for a wide range of applications, including sensors, actuators, transducers, and memory devices.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Sankaranarayanan V
Prof. K. Sethupathi
Prof. M. S. Ramachandra Rao
Department of Physics
Intellectual Property
- IITM IDF Ref. 1498
- IN 364983 – Patent Granted
Technology Readiness Level
TRL – 4
Technology validated in lab scale.