Calculations of giant magnetoelectric effects in ferroic composites of rare-earth-iron alloys and ferroelectric polymers
Calculations of giant magnetoelectric effects in ferroic composites of rare-earth-iron alloys and ferroelectric polymers
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DOI：
10.1103/physrevb.63.144415
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发表时间：
2001-04-01
影响因子：
3.7
通讯作者：
Huang, JH
中科院分区：
文献类型：
--
作者：
Nan, CW;Li, M;Huang, JH
采用格林函数方法研究了铁性复合材料中涉及线性和非线性耦合相互作用的磁 - 力 - 电耦合效应。我们利用该理论提出，在由巨磁致伸缩稀土 - 铁合金颗粒填充的铁电聚（偏二氟乙烯 - 三氟乙烯）共聚物中可能存在巨磁电效应，且该效应明显大于最知名的磁电材料中的效应。这种柔性复合材料有望表现出大的磁致伸缩。我们的研究结果展示了如何设计性能更优的此类柔性聚合物基磁电复合材料，并可能激发人们对耦合多场效应和磁电材料实际应用领域的进一步关注。
Coupled magnetic-mechanical-electric effects involving linearly and nonlinearly coupling interactions in ferroic composites are investigated using a Green's function technique. We use the theory to suggest a possible giant magnetoelectric effect in a ferroelectric poly(vinylidene fluoride-trifluorethylene) copolymer filled by giant magnetostrictive rare-earth-iron alloy particles, which is markedly larger than that in the best known magnetoelectric materials. The flexible composite is expected to exhibit large magnetostriction. Our results show how to design such flexible polymer-matrix magnetoelectric composites with better performance and may stimulate further interest in the areas of coupled multifield effects and magnetoelectric materials for practical applications.