Transport Properties of Hybrids with Ferromagnetic MnAs Nanoclusters and Their Potential for New Magnetoelectronic Devices
Transport Properties of Hybrids with Ferromagnetic MnAs Nanoclusters and Their Potential for New Magnetoelectronic Devices
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DOI：
10.1002/adma.201403136
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发表时间：
2014-12
影响因子：
29.4
通讯作者：
M. T. Elm;S. Hara
中科院分区：
文献类型：
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作者：
M. T. Elm;S. Hara
含有嵌入在半导体基质中的铁磁纳米团簇的颗粒混合结构是一类有趣的材料，因为它们的性质可以在很宽的范围内调节。杂化材料在自旋电子学和磁电子学领域是一种很有前途的稀磁半导体替代品，因为纳米团簇甚至在室温下也可以显示铁磁行为。本文综述了近年来研究得比较深入的含MnAs夹杂的稀磁半导体（Ga，Mn）As。提出了不同的制备方法，在过去的二十年中开发，以获得半导体矩阵中的MnAs纳米团簇，并调整这些集群的结构和磁性能。最近的结果的影响的纳米团簇的混合物的输运性质，以及第一种方法使用的混合物与随机纳米团簇分布在新的自旋电子器件进行了讨论。此外，使用单一的MnAs纳米团簇以及有序排列的几个纳米团簇在新的平面磁电子器件的前景进行了说明。
Granular hybrid structures containing ferromagnetic nanoclusters embedded in a semiconducting matrix are an interesting class of materials as their properties can be tuned in a wide range. Hybrids are a promising alternative to dilute magnetic semiconductors in the field of spintronics and magnetoelectronics, because the nanoclusters can show ferromagnetic behavior even at room temperature. In this review, it is focused on the rather well investigated dilute magnetic semiconductor (Ga,Mn)As with MnAs inclusions. Different preparation methods are presented which were developed over the last two decades in order to obtain MnAs nanoclusters in the semiconducting matrix and to tune the structural and magnetic properties of these clusters. Recent results on the influence of the nanoclusters on the hybrids' transport properties as well as first approaches to use hybrids with a random nanocluster distribution in new spintronic devices are discussed. In addition, the perspective of using single MnAs nanoclusters as well as ordered arrangements of a few nanoclusters in new planar magnetoelectronic devices is illustrated.