Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3679661
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- Defense Advanced Research Project Agency-HUMS
- National Science Foundation
- Russian Foundation for Basic Research
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [902701] Funding Source: National Science Foundation
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Mechanical strain mediated magnetoelectric (ME) effects are studied in bilayers and trilayers of piezoelectric single-crystal lanthanum gallium tantalate (LGT) and magnetostrictive permendur (P). The ME voltage coefficient ranges from 2.3 V/cm Oe at 20 Hz to 720 V/cm Oe at bending resonance and is higher by an order of magnitude than in composites with ferroelectric lead zirconate titanate or lead magnesium niobate-lead titanate. The low-frequency magnetic noise for P-LGT-P is a factor of 2-10 smaller than for ferroelectrics based composites. Langatate is free of ferroelectric hysteresis, pyroelectric effects, and phase transitions up to 1450 degrees C and is of interest for ultrasensitive, high temperature magnetic sensors. (C) 2012 American Institute of Physics. [doi:10.1063/1.3679661]
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