Browsing by Author "Gao, J."

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    Enhanced resonant magnetoelectric coupling in frequency-tunable composite multiferroic bimorph structures
    Finkel, Peter; Bonini, J.; Garrity, E.; Bussman, K.; Gao, J.; Li, Jiefang; Lofland, S. E.; Viehland, Dwight D. (AIP Publishing, 2011-02-01)
    We report on a giant tunable enhanced resonant magnetoelectric (ME) coupling in multiferroic magnetostrictive/piezoelectric composite bimorph structures. The approach uses a magnetic/electric field assisted stress-reconfigurable resonance to produce frequency tuning of up to 100%. The studies were performed by laser Doppler spectroscopy. We also show that this principle of a continuously tuned resonance might be used to improve sensitivity for ME magnetic sensors. (C) 2011 American Institute of Physics. [doi:10.1063/1.3560055]
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    Enhancement in the field sensitivity of magnetoelectric laminate heterostructures
    Das, J.; Gao, J.; Xing, Zengping; Li, Jiefang; Viehland, Dwight D. (AIP Publishing, 2009-08-01)
    The effect of magnetostrictive layer thickness on the magnetoelectric (ME) response and field sensitivity of Pb(Zr,Ti)O(3)-metglas based sandwiched ME heterostructures has been studied. Such structures hold promise for sensor applications. The increase in metglas thickness results in a significant increase in the ME response and magnetic field sensitivity. The ME coefficient and field sensitivity increase by about 1.5-1.75 and 2.7 times, respectively, for a structure with 150 mu m thick six metglas layers on both sides of the Pb(Zr, Ti)O(3), in comparison to a 50 mu m thick two layered structure. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3222914]