Preparation and Magnetoelectric Coupling Effects of Ba0.85Ca0.15Zr0.1Ti0.9O3/CoFe2O4 Laminated Ceramics

doi:10.3724/SP.J.1077.2013.12236

Journal of Inorganic Materials ›› 2013, Vol. 28 ›› Issue (3): 317-320.DOI: 10.3724/SP.J.1077.2013.12236

• Research Paper • Previous Articles Next Articles

Preparation and Magnetoelectric Coupling Effects of Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃/CoFe₂O₄ Laminated Ceramics

YUAN Chang-Lai, XUAN Min-Jie, XU Ji-Wen, LIU Xin-Yu, ZHOU Chang-Rong, YANG Yun

(School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China)

Received:2012-04-16 Revised:2012-07-08 Published:2013-03-20 Online:2013-02-20
Supported by:
Young Scholars of the National Natural Science Foundation of China (51102055)

Abstract

Abstract: The Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃-CoFe₂O₄ laminated composite ceramics composed of the piezomagnet CoFe₂O₄, and the piezoelectrics Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃ with the sintering agents CuO and CeO₂, were prepared by the interfacial solid-state melt infiltration technique. It is found that a good interfacial bonding between the piezomagnet and piezoelectrics is obtained. With the increasing thickness ratio of piezomagnet to piezoelectrics, the magnetostriction coefficient (–λ) of the laminated ceramics increase, the piezoelectric coefficient (d₃₃) decrease, and the magnetoelectric coupling coefficient (α_E) increases firsty and then decreases. The values of –λ and d₃₃ of the laminated ceramics are in the range from 67×10-6 to 134×10^-6 and 205 pC/N to 340 pC/N, respectively. At dc magnetic field of 100 mT along with ac frequency of 230 kHz and the thickness ratio of 2, a maximum value of α_E=3200 mV/(cm·mT) is achieved for the laminated ceramics.

Key words: Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃, CoFe₂O₄, laminated ceramics, magnetoelectric coupling effects

CLC Number:

TM27

YUAN Chang-Lai, XUAN Min-Jie, XU Ji-Wen, LIU Xin-Yu, ZHOU Chang-Rong, YANG Yun. Preparation and Magnetoelectric Coupling Effects of Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃/CoFe₂O₄ Laminated Ceramics[J]. Journal of Inorganic Materials, 2013, 28(3): 317-320.

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Preparation and Magnetoelectric Coupling Effects of Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃/CoFe₂O₄ Laminated Ceramics

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