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Giant magnetoelectric effect in sintered multilayered composite structures


Trilayer composites consisting of 0.9Pb(Zr 0.52 Ti 0.48 )O 3 –0.1Pb(Zn 1/3 Nb 2/3 )O 3 0.9 Pb ( Zr 0.52 Ti 0.48 ) O 3 – 0.1 Pb ( Zn 1 / 3 Nb 2 / 3 ) O 3 (0.9 PZT-0.1 PZN) and Ni 0.6 Cu 0.2 Zn 0.2 Fe 2 O 4 Ni 0.6 Cu 0.2 Zn 0.2 Fe 2 O 4 (NCZF) in the configuration NCZF-(0.9 PZT-0.1 PZN)-NCZF were synthesized using pressure assisted sintering. Composites with optimized magnetostrictive to piezoelectric thickness ratio showed a high magnetoelectric (ME) coefficient of 525 mV/cm Oe 525 mV / cm Oe . Further enhancement in the magnitude of ME coefficient was obtained (595 mV/cm Oe) ( 595 mV / cm Oe ) when the angle of applied dc magnetic field was changed to 45° 45 ° . Changing the intermediate piezoelectric layer from single to trilayer stack geometry configuration leads to the realization of giant ME response of 782 mV/cm Oe 782 mV / cm Oe in sintered composites.



Journal of Applied PhysicsAmerican Institute of Physics

Published: Aug 15, 2008

Keywords: composite materials; copper compounds; giant magnetoresistance; magnetic multilayers; magnetostriction; nickel compounds; piezoceramics; sintering; zinc compounds

DOI: 10.1063/1.2966597

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