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Magnetoelectric coupling in lead-free composites by Ni-ferrite and (K0.5Na0.5)NbO3-based ferroelectric

YUN ZHOU1,* , SHENG HUA ZHOU2, YOUXIANG YE2, LI ZHANG1

Affiliation

  1. College of s cience, China Jiliang University, Hangzhou 310018, China
  2. College of optical and electronic technology, China Jiliang University, Hangzhou, 310018, China

Abstract

Nontoxic lead free magnetoelectric composites NiFe2O4/0.948(K0.5Na0.5)NbO3-0.052LiSbO3 (NFO/KNN) with different NFO content were successfully prepared by a solid state reaction method. The dependence of ferroelectric, ferromagnetic properties and magnetoelectric coupling on NFO phase content was studied. The results show that the N F O content significantly affects the ferroelectric, ferromagnetic properties and ME effects. The ME behaviors are strongly dependent on the dc bias magnetic field. The ME voltage coefficients increase initially with the increase in dc magnetic fields and then decrease with further increase in the fields. A maximum magnetoelectric voltage coefficient of 5.59 mV·cm−1·Oe−1 is observed from the composite with 15 mol% NFO at the frequency of 1 kHz..

Keywords

Magnetic property Dielectric property Magnetoelectric effect.

Citation

YUN ZHOU, SHENG HUA ZHOU, YOUXIANG YE, LI ZHANG, Magnetoelectric coupling in lead-free composites by Ni-ferrite and (K0.5Na0.5)NbO3-based ferroelectric, Optoelectronics and Advanced Materials - Rapid Communications, 6, 3-4, March-April 2012, pp.401-403 (2012).

Submitted at: Jan. 19, 2012

Accepted at: April 11, 2012