• P K Mahapatra

Articles written in Bulletin of Materials Science

• Structural, dielectric and electrical properties of Sm-modified Pb(SnTi)O3 ferroelectric system

We have synthesized (Pb1–𝑥Sm𝑥)(Sn𝑦Ti1–𝑦)1–𝑥/4O3 (PSmST) polycrystalline ferroelectric ceramics with 𝑥 = 0.05, 0.07, 0.1 and 𝑦 = 0.45 by a solid-state reaction technique and performed preliminary X-ray diffraction (XRD) analysis, detailed temperature and frequency dependence dielectric measurements on them. The a.c. conductivity has been investigated over a wide range of temperature and the activation energy ($E_{a.c.}$) has also been calculated. It is observed that

the dielectric permittivity (𝜀) and loss tangent (tan 𝛿) are dependent on frequency,

the temperature of dielectric permittivity maximum shifts toward lower temperature side with the increase of samarium ion (Sm+3) concentration at the Pb sites, and

observed and calculated 𝑑-values of XRD patterns show that the compounds have been formed in orthorhombic single phase.

• Bulletin of Materials Science

Volume 44, 2021
All articles
Continuous Article Publishing mode

• Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020