Dielectric characteristics of La-modified PbTiO₃ nanoceramics

ABSTRACT

The nanoceramics of lanthanum (La³⁺)-modified lead titanate (PbTiO₃) with a general formula Pb_1−yLa_yTi_(1−y/4)O₃ (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 PbTiO₃ is one of the main characteristics of the material.

KEYWORDS:

• Nanoceramics
• X-ray diffraction
• phase transition
• dielectric properties

Disclosure statement

No potential conflict of interest was reported by the authors.