Tunable Magnetoelectric Response in Cofired (Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3)/CoFe2O4 Laminated Composite

  • Yulan Cheng
  • Sheng LiuEmail author
  • Kexiang Wei
  • Shuoqing Yan
  • Shengxiang Huang
  • Lianwen Deng


Magnetoelectric (ME) composites exhibiting strain-mediated coupling are gaining increasing interest for applications. In this paper, an enhancement of ME response on simple lead-free laminated composites (80Bi0.5Na0.5TiO3-20Bi0.5K0.5TiO3)/CoFe2O4 (BNKT/CFO) prepared by a modified cofiring processing were demonstrated, by analyzing the effect of thickness variation on ME properties. The coexistence of independent BNKT and CFO phase and the presence of a clear and well-bonded interface were confirmed. Specifically, the maximum ME voltage coefficient of laminated composite reached up to 74.59 mV/(cm·Oe) with an optimized BNKT/CFO layer thickness ratio of 1:2. The static elastic model and the equivalent circuit model were used to determine the interface coupling. Also, there is a large magnetodielectric (MD) response up to 5.1% in a magnetic field of 8 kOe. Tuning the layer thickness, the ME response of laminated composite is further optimized, which is of significance in development of magnetic-field-tuned electronic devices.


Magnetoelectricity laminated composite cofiring processing thickness dependence 


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This work was supported by the National Key Research and Development Program of China (grant no. 2017YFA0204600) and the National Natural Science Foundation of China (grant no. 51902104).


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Yulan Cheng
    • 1
  • Sheng Liu
    • 1
    Email author
  • Kexiang Wei
    • 1
  • Shuoqing Yan
    • 2
  • Shengxiang Huang
    • 3
  • Lianwen Deng
    • 3
  1. 1.Hunan Provincial Key Laboratory of Vehicle Power and Transmission SystemHunan Institute of EngineeringXiangtanChina
  2. 2.College of Computational Science and ElectronicsHunan Institute of EngineeringXiangtanChina
  3. 3.School of Physics and ElectronicsCentral South UniversityChangshaChina

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