Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7993148 | Journal of Alloys and Compounds | 2018 | 36 Pages |
Abstract
The possibility of achieving significantly higher magnetoelectric (ME) coupling in lead-free [(0.5)BCT-(0.5)BZT]/NiFe2O4 and NiFe2O4/[(0.5)BCT-(0.5)BZT]/NiFe2O4 laminates, processed by epoxy bonding using 1â¯mm -thick [(0.5)BCT-(0.5)BZT] and NiFe2O4 layers was reported. The effect of coupling modes in these bi- and tri-layer laminates was investigated through evaluating transverse (αE,31) and longitudinal (αE,33) ME coefficients both at low (1â¯kHz) and at electromechanical resonance frequencies (300-380â¯kHz) under external bias field. Measurements on frequency dependence of ME coefficients revealed resonance enhancement due to bending and radial acoustic modes. A maximum ME response of 0.98 and 1.1â¯V/cmâ
Oe was obtained for the [(0.5)BCT-(0.5)BZT]/NiFe2O4 and NiFe2O4/[(0.5)BCT-(0.5)BZT]/NiFe2O4 composites, respectively at the radial mode resonance, and these finding are explained on the basis of mechanical coupling exists at the interfaces of [(0.5)BCT-(0.5)BZT] and NiFe2O4 phases.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
N. Shara Sowmya, A. Srinivas, P. Saravanan, K. Venu Gopal Reddy, S.V. Kamat, J. Paul Praveen, Dibakar Das, G. Murugesan, S. Dinesh Kumar, V. Subramanian,