Dielectric characteristics of La-modified PbTiO sub(3) nanoceramics

• Published in: Phase transitions Vol. 90; no. 4; pp. 362 - 370
• Main Authors: Shukla, Archana, Shukla, Namrata, Choudhary, RNP
• Format: Journal Article
• Language: English
• Published: 03-04-2017
• Subjects: Dielectric constant; Dielectrics; Lead (metal); Lead lanthanum titanate; Lead titanates; Nanostructure; Particle size; Phase transformations
• ISSN: 0141-1594; 1029-0338
• DOI: 10.1080/01411594.2016.1201819

The nanoceramics of lanthanum (La super(3+))-modified lead titanate (PbTiO sub(3)) with a general formula Pb sub(1-y)La sub(y)Ti sub((1-y/4))O sub(3) (y = 0.00, 0.06, 0.08, 0.10, 0.12 Lead Lanthanum Titanate (PLT)) were synthesized by a mechanothermal method. Thermal analysis of the PLT samples exhibits their nature of the reaction and thermal stability. The incorporation of La at the Pb site of lead titanate (PT) not only changes the ratios of its unit cell parameters but also reduces the grain and particle size to nanoscale. The dielectric constant of PLT is dependent on La concentration. The La concentration-dependent phase transition temperature of PbTiO sub(3) is one of the main characteristics of the material.