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用带底座的Pb（Zr，Ti）O3薄片阵列作为压电相，Terfenol-D粉末与树脂的混合物作为磁致伸缩相，灌注复合得到准2-2型磁电多层三相复合材料.研究了这种准2-2型多层结构在不同偏置磁场和不同角度下的磁电效应.其面内相互垂直的两个方向磁电电压系数分别在0.15和0.225 T磁场下达到峰值，低频下分别为1.62×105 V·m-1T-1和1.75×105 V·m-1T-1；而在垂直于面内方向，低频下磁电系数仅有1.3×104 V·m-1T-1，体现出显著的磁电各向异性.这种准2-2型磁电多层复合材料具有较好的交流磁场灵敏度，在谐振频率下可以探测到10-9 T的交流磁场的变化.进行合适的设计和排列，可以探测空间磁场的大小和方向，有望应用于磁场传感器等领域.A pseudo 2-2 type multilayered magnetoelectric composite of Pb（Zr，Ti）O3 slice array （with base） and Terfenol-D/epoxy medium was prepared by the dice-and-fill technique. Obvious magnetoelectric anisotropy was observed in the pseudo 2-2 type composite，e.g.，the magnetoelectric coefficients at low frequency were about （1.62—1.75）×105 V·m-1T-1 in the in-plane directions，but only 1.3×104 V·m-1T-1 in the out-of-plane direction. The pseudo 2-2 type composite can detect AC magnetic field as small as 10-9 T under resonance drive. The magnetoelectric anisotropy and high magnetic field sensitivity make such pseudo 2-2 type multilayered magnetoelectric composites detect both direction and magnitude of magnetic field，which is of technological importance for applications as magnetic sensors.
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Keywords:
- magnetoelectric effect /
- multiferroics /
- multilayered composites
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