Journal
AIP ADVANCES
Volume 8, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5006203
Keywords
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Funding
- Department of Advanced Research Projects Agency through the MATRIX Program [W911NF-15-1-0616]
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This report is on a new class of magnetostatically tunable magneto-impedance and magneto-capacitance devices based on a composite of ferromagnetic Metglas and ferroelectric lead zirconate titanate (PZT). Layered magneto-electric (ME) composites with annealed Metglas and PZT were studied in a longitudinal in-plane magnetic field-transverse electric field (L-T) mode. It was found that the degree of tunability was dependent on the annealing temperature of Metglas. An impedance tunability (Delta Z/Z(0)) of >= 400% was obtained at the electromechanical resonance (EMR) frequency (f(r)) for a sample with Metglas layers annealed at T-a = 500 degrees C. This tunability is a factor of two higher than for composites with Metglas annealed at 350 degrees C. The tunability of the capacitance, (Delta C/C-0), was found to be 290% and -135k% at resonance and antiresonance, respectively, for T-a = 500 degrees C. These results provide clear evidence for improvement in static magnetic field tunability of impedance and capacitance of ME composites with the use of annealed Metglas and are of importance for their potential use in tunable electronic applications. (C) 2017 Author(s).
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