Department of Physics

Indian Institute Of Technology Madras , Chennai

Investigation on multifunctional properties of 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO system by ferroelectric, magnetoelectric and photovoltaic studies

Speaker : Mr. Atal Bihari Swain

2018-11-02

Abstract :

The recently discovered lead free ferroelectric 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO (BZT-BCT) system having large piezoelectric coefficient attracted immense research interest in several fields such as electro-caloric, electro-optic, energy storage, etc. In the present work, the additional multifunctional characteristics of the compound were explored. In this regard, the field-induced structural transformation and its influence on other physical characteristics were investigated. Additionally, the magnetoelectric (ME) studies on BZT-BCT/Ni heterostructure film and BZT-BCT/NiFe2O4 laminate composites revealed giant ME voltage coefficients. Also, enhanced ME coefficient was demonstrated by a novel method of tuning the resonance modes in laminate composites. Notably, the compound exhibited a remarkable ferroelectric photovoltaic characteristics both in bulk and thin films. The observed PV response was correlated with the symmetry breaking field induced structural transformation

Key Speaker Mr. Atal Bihari Swain
Guests None
Place Seminar Room
Start Time 11:30 AM
Finish Time 1:00 PM
External Link None