Magnetoelectric Coupling in Ordered Arrays of Multilayered Heteroepitaxial BaTiO3/CoFe2O4 Nanodots
Magnetoelectric Coupling in Ordered Arrays of Multilayered Heteroepitaxial BaTiO3/CoFe2O4 Nanodots
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DOI：
10.1021/nl201443h
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发表时间：
2011-08-01
期刊：
影响因子：
10.8
通讯作者：
Hesse, Dietrich
中科院分区：
文献类型：
--
作者：
Lu, Xiaoli;Kim, Yunseok;Hesse, Dietrich
采用模板直接外延法制备了BaTiO 3/CoFe 2 O 4铁电/铁磁多层纳米点阵列，这是一种具有水平和垂直两种排列方式的新型磁电纳米复合材料。通过降低箝位效应，发现BaTiO 3相变温度附近的铁电畴结构发生了变化，不同界面面积的BaTiO 3相变温度附近的磁化强度也发生了明显的变化，这为在纳米尺度上定量引入ME耦合和构建高密度多态存储器件奠定了基础。
Fully epitaxial BaTiO3/CoFe2O4 ferroelectric/ferromagnetic multilayered nanodot arrays, a new type of magnetoelectric (ME) nanocomposite with both horizontal and vertical orderings, were fabricated via a stencil-derived direct epitaxy technique. By reducing the clamping effect, ferroelectric domain modification and distinct magnetization change proportional to different interfacial area around the BaTiO3 phase transition temperatures were found, which may pave the way to quantitative introducing of ME coupling at nanoscale and build high density multistate memory devices.