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Hexagonal ferrite‐piezoelectric composites for dual magnetic and electric field tunable 8–25 GHz microstripline resonators and phase shifters
Author(s) -
Tatarenko A. S.,
Murthy D. V. B.,
Srinivasan G.
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.26793
Subject(s) - materials science , ferrite (magnet) , resonator , lead zirconate titanate , electric field , ferromagnetic resonance , microwave , piezoelectricity , composite material , dielectric , magnetic field , ferroelectricity , optoelectronics , magnetization , telecommunications , physics , quantum mechanics , computer science
Microwave magnetoelectric (ME) effects over 8–25 GHz have been studied in bilayers of single crystal Y‐type hexagonal ferrite Ba 2 Zn 2 Fe 12 O 22 and polycrystalline lead zirconate titanate (PZT) or single crystal lead magnesium niobate–lead titanate (PMN–PT). The bilayers are made by epoxy bonding or eutecting bonding the ferrite and piezoelectric. The strength of ME interactions A has been measured from data on electric field E tuning of magnetic modes in the ferrite. The electric field produces a mechanical deformation in the piezoelectric and results in a shift in the ferromagnetic resonance. Bilayers of ferrite/PMN–PT have A = 10 MHz cm/kOe and is an order of magnitude higher than for ferrite‐PZT. The ferrite/PMN–PT resonators could be tuned by 120 MHz with E = 12 kV/cm. Data on differential phase shift versus E indicate a differential phase shift of 50° for E = 12 kV/cm, a linear variation in the phase shift with E and an insertion loss of 4–8 dB. The bilayers are of interest for 8–25 GHz dual E‐ and H‐tunable ferrite resonators and phase shifters. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1215–1218, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26793