Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (10): 1042-1046.DOI: 10.3724/SP.J.1077.2012.12014

• Research Paper • Previous Articles     Next Articles

Fabrication and Properties of the Potassium Sodium Niobate/Cobalt Copper Ferritemultiferroic Magnetoelectric Composites

XUAN Min-Jie1, LIU Xin-Yu1,2, YUAN Chang-Lai1,2, XU Ji-Wen3, MA Jia-Feng1,2   

  1. (1. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; 2. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 3. School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710100, China)
  • Received:2012-01-05 Revised:2012-03-03 Published:2012-10-20 Online:2012-09-17
  • About author:XUAN Min-Jie. E-mail: xmjdy@126.com
  • Supported by:

    The Information Materials Key Laboratory foundation of Guangxi (0710908-15-Z); Natural Science Foundation of Guangxi (2010GXNSFD013007)

Abstract: (1–x)(0.9462K0.5Na0.5NbO3-0.0498LiSbO3-0.004BiFeO3)-xCo0.85Cu0.15Fe2O4((1–x)(KNN-LS-BFO)-xCCFO) (x=0.1, 0.2, 0.3, 0.4, 0.5) multiferroic magnetoelectric ceramics were prepared by solid phase method. The presence of perovskite and spinel in the sintered composites were proved by XRD patterns and no impurity phase existed. SEM images show that particle size of KNN-LS-BFO is big and complete, while the particle size of CCFO is small. When x increases from 0.1 to 0.5, the piezoelectric coefficient of the composites decreases from 120 pC/N to 33 pC/N, While saturation magnetization and remanent magnetization increase and saturation magnetostriction constant increases from 18×10–6 to 52×10–6 approximately. When the applied magnetic field increases, the magnetoelectric properties of the composites increase to the maximum and then decrease. When the alternating magnetic field frequency is 1 kHz and x=0.3, the magnetoelectric voltage coefficient attains maximum value 20.6 mV/A.

Key words: multiferroic materials, magnetoelectric effect, magnetoelectric voltage coefficient

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