A particulate composite consisting of 65 mol. % Na0.5Bi0.5TiO3 and 35 mol. % CoFe2O4 was synthesized, and it’s structure, microstructure, ferroelectric, magnetostrictive, magnetic, and direct/indirect magnetoelectric properties were studied. The composite showed different magnetization behaviour under electrically poled and un-poled conditions. The percentage change in magnetization as a result of poling is approximately −15% at 500 Oe magnetic field. Magnetostriction measurements displayed a value of λ11 = −57 × 10−6 and piezomagnetic coefficient δλ11/δH = 0.022 × 10−6 kOe−1 at 2.2 kOe for the composite. The maximum magnetoelectric output varied from 1350 mV/cm to 2000 mV/cm with change in the electrical poling conditions.
Observation of direct and indirect magnetoelectricity in lead free ferroelectric (Na0.5Bi0.5TiO3)–magnetostrictive (CoFe2O4) particulate composite
A. Srinivas, R. V. Krishnaiah, T. Karthik, P. Suresh, Saket Asthana, S. V. Kamat; Observation of direct and indirect magnetoelectricity in lead free ferroelectric (Na0.5Bi0.5TiO3)–magnetostrictive (CoFe2O4) particulate composite. Appl. Phys. Lett. 20 August 2012; 101 (8): 082902. https://doi.org/10.1063/1.4745840
Download citation file: