铌酸钾钠/铁酸钴铜多铁性磁电复合材料的制备及性能研究

doi:10.3724/SP.J.1077.2012.12014

无机材料学报 ›› 2012, Vol. 27 ›› Issue (10): 1042-1046.DOI: 10.3724/SP.J.1077.2012.12014 CSTR: 32189.14.SP.J.1077.2012.12014

铌酸钾钠/铁酸钴铜多铁性磁电复合材料的制备及性能研究

轩敏杰¹, 刘心宇^1,2, 袁昌来^1,2, 许积文³, 马家峰^1,2

(1. 桂林电子科技大学材料科学与工程学院, 桂林 541004; 2. 中南大学材料科学与工程学院, 长沙 410083; 3. 陕西师范大学材料科学与工程学院, 西安 710100)

收稿日期:2012-01-05 修回日期:2012-03-03 出版日期:2012-10-20 网络出版日期:2012-09-17
作者简介:轩敏杰(1984–), 男, 硕士研究生. E-mail: xmjdy@126.com
基金资助:
广西信息材料重点实验室主任基金(桂科能0710908-15-Z); 广西自然科学基金(2010GXNSFD013007)

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

XUAN Min-Jie¹, LIU Xin-Yu^1,2, YUAN Chang-Lai^1,2, XU Ji-Wen³, MA Jia-Feng^1,2

(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)

摘要/Abstract

摘要： 通过固相法制备了(1–x)(0.9462K_0.5Na_0.5NbO₃-0.0498LiSbO₃-0.004BiFeO₃)-xCo_0.85Cu_0.15Fe₂O₄((1–x)(KNN- LS-BFO)-xCCFO)(x=0.1、0.2、0.3、0.4、0.5)复合多铁性磁电陶瓷. XRD分析表明: 烧结后的样品为复合的钙钛矿和尖晶石结构, 没有发现杂相产生. SEM照片显示KNN-LS-BFO晶粒生长完好尺寸较大, 而CCFO晶粒尺寸较小. 当x从0.1增加到0.5时, 复合材料的压电系数从120 pC/N减小到33 pC/N, 而饱和磁化强度和剩磁增加, 饱和磁致伸缩系数从18×10^–6增加到51.5×10^–6左右. 材料的磁电耦合系数随着外磁场的增加先增大到极大值后再减小; 当交变磁场频率为1 kHz, x=0.3时材料的磁电电压系数达到最大值20.6 mV/A.

关键词: 多铁性复合材料, 磁电耦合效应, 磁电电压系数

Abstract: (1–x)(0.9462K_0.5Na_0.5NbO₃-0.0498LiSbO₃-0.004BiFeO₃)-xCo_0.85Cu_0.15Fe₂O₄((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

中图分类号:

TQ174

轩敏杰, 刘心宇, 袁昌来, 许积文, 马家峰. 铌酸钾钠/铁酸钴铜多铁性磁电复合材料的制备及性能研究[J]. 无机材料学报, 2012, 27(10): 1042-1046.

XUAN Min-Jie, LIU Xin-Yu, YUAN Chang-Lai, XU Ji-Wen, MA Jia-Feng. Fabrication and Properties of the Potassium Sodium Niobate/Cobalt Copper Ferritemultiferroic Magnetoelectric Composites[J]. Journal of Inorganic Materials, 2012, 27(10): 1042-1046.

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铌酸钾钠/铁酸钴铜多铁性磁电复合材料的制备及性能研究

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

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