Abstract
A strong magnetoelectric (ME) interaction is presented in a magnetostrictive-semiconductor-piezoelectric heterostructure that consists of the Huesler alloy, Co₂MnAl, GaAs, and lead magnesium niobate-lead titanate (PMN-PT). The laminated Co₂MnAl/GaAs/PMN-PT structure, having a thickness of 19 nm/180 μm/500 μm, demonstrates a ferromagnetic resonance (FMR) field shift of 28 Oe with an external electric field of 200 V across the PMN-PT substrate. This corresponds to a resonance frequency shift of similar to 125 MHz at X-band. It yields a large ME coupling (7 Oe cm/kV) and microwave tunability (similar to 32 MHz/kV cm⁻¹), compared to other trilayer multiferroic composite structures. In addition, static magnetization measurement indicates a reduction in the remanence magnetization while applying the electric field, which corroborates the ME interactions mediated by the translation of magnetoelastic forces in this structure. This work explores the potential of multiferroic heterostrucuture transducers for use in FMR microwave devices tuned by electric fields.
Keywords
GaAs-based multiferroic heterostrucuture transducers, microwave tunability, Co₂MnAl, PMN-PT, Huesler alloy, lead magnesium niobate lead titanate, magnetostrictive semiconductor piezoelectric, magnetoelectric interaction, ME
Subject Categories
Ferromagnetic resonance, Microwave devices, Heterostructures
Disciplines
Electromagnetics and photonics
Publisher
American Institute of Physics
Publication Date
4-2-2009
Rights Information
Copyright 2009 American Institute of Physics.
Rights Holder
American Institute of Physics
Permanent URL
Recommended Citation
Chen, Y.; Gao, J.; Northeastern University; Liu, M.; Yoon, S. D.; Geiler, A. L.; Nedoroscik, M.; Heiman, D.; Sun, N. X.; Vittoria, C.; and Harris, V. G., "Microwave tunability in a GaAs-based multiferroic heterostructure: Co₂MnAl/GaAs/PMN-PT" (2009). Electrical and Computer Engineering Faculty Publications. Paper 90. http://hdl.handle.net/2047/d20002261
Figure 1
microwave_tunability_fig2.zip (447 kB)
Figure 2
microwave_tunability_fig3.zip (249 kB)
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Additional Files
microwave_tunability_fig1.zip (110 kB)Figure 1
microwave_tunability_fig2.zip (447 kB)
Figure 2
microwave_tunability_fig3.zip (249 kB)
Figure 3
Notes
Originally published in Journal of Applied Physics 105, 07A510 (2009). DOI:10.1063/1.3068543 (http://dx.doi.org/10.1063/1.3068543).