Eur. Phys. J. B 71, 371-375 (2009)
https://doi.org/10.1140/epjb/e2009-00227-y

Microwave and MM-wave magnetoelectric interactions in ferrite-ferroelectric bilayers

¹ Physics Department, Oakland University, Rochester, MI, 48309, USA
² Department of Physics, University of Pune, 411007 Pune, India
³ Institute for Electronic Information Systems, Novgorod State University, Veliky Novgorod, Russia

Corresponding author: ^a srinivas@oakland.edu

Received: 1 March 2009
Revised: 19 May 2009
Published online: 3 July 2009

Abstract

Measurements of the strength of magnetoelectric (ME) interactions at microwave and millimeter-wave frequencies have been carried out on layered ferrite-piezoelectric oxides. An electric field E applied to the composite produces a mechanical deformation, resulting in a field shift δH_E or a frequency shift δf_E in the resonance. A stripline structure or a cavity resonator was used. The strength of ME coupling is obtained from data on δH_E or δf_E vs. E. Studies were performed at 1–110 GHz on bilayers of single crystal nickel zinc ferrite or hexagonal ferrites and single crystal lead magnesium niobate-lead titanate, lead zinc niobate-lead titanate or polycrystalline lead zirconium titanate. The coupling strength has been found to be dependent on the nature of piezoelectric phase, magnetic field orientation and volume for both phases. The ME coupling strength is on the order of 1–2 Oe cm/kV (or 3–6 MHz cm/kV) and is an order of magnitude stronger than in polycrystalline ferrite-piezoelectric bilayers. The high frequency ME effect is of importance for dual electric and magnetic field tunable ferrite-piezoelectric devices. 77.84.-s Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials