Subterahertz excitations and magnetoelectric effects in hexaferrite-piezoelectric bilayers

Ustinov, Alexey B.; Srinivasan, G.
October 2008
Applied Physics Letters;10/6/2008, Vol. 93 Issue 14, p142503
Academic Journal
A frequency-agile hexaferrite-piezoelectric composite for potential device applications at subterahertz frequencies is studied. The bilayer is composed of aluminum substituted barium hexagonal ferrite (BaAl2Fe10O19) and lead zirconate titanate (PZT). A dc electric field applied to PZT results in mechanical deformation of the ferrite, leading to a frequency shift in ferromagnetic resonance. The bilayer demonstrates magnetoelectric interaction coefficient of about 0.37 Oe cm/kV.


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