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Ferroelectrics Volume 410, 2010 - Issue 1
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SECTION K2: MULTIFERROICS AND APPLICATIONS

Effect of CoFe2O4 Content on the Dielectric and Magnetoelectric Properties in CoFe2O4/ Pb(Mg1/3Nb2/3)0.35Ti0.65O3 Composites

Ying Pei College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
,
Qishou Li College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
,
Wei Shi College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
,
Bin Zhang College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
,
Qiang Chen College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
,
Xi Yue College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
,
Dingquan Xiao College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
&
Jianguo Zhu College of Material Science and Engineering, Sichuan University, Chengdu, 610064, China
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Pages 82-87 | Received 23 Aug 2009, Accepted 19 Oct 2009, Published online: 20 Jan 2011
 
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Abstract

Ferrimagnetic CoFe2O4 (CFO) and ferroelectric Pb(Mg1/3Nb2/3)0.35Ti0.65O3 (PMNT) composite ceramics, [xCFO-(1−x) PMNT for x = 20, 30, 40 and 50 wt.%], were prepared using conventional ceramic processing. The phase structures, surface morphology, dielectric, piezoelectric, and magnetoelectric properties of CFO/PMNT composite ceramics were analyzed. It was found that the phase structures of the CFO/PMNT were mix phase structure of spinel phase and perovskite phase. The maximum value of the piezoelectric constant d 33, 212 pC/N, was obtained for the composite with x = 0.2. However, the maximum value of the ME voltage coefficient, 14.4 mV/cm.Oe, was observed for the composite with x = 0.5.

Acknowledgments

This work was supported by the Natural Science Foundation of China (NSFC) (60771016).

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