Magnetic Characterization of a Mn Based Ferromagnet on SixGe(1-x-y)Sny with High Sn Content
Magnetic Characterization of a Mn Based Ferromagnet on SixGe(1-x-y)Sny with High Sn Content
复制标题
高 Sn 含量 SixGe(1-x-y)Sny 上锰基铁磁体的磁特性
DOI：
10.1149/09301.0101ecst
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
J. Schulze
中科院分区：
文献类型：
--
作者：
H. S. Funk;M. Kern;D. Weisshaupt;C. Sürgers;I. A. Fischer;M. Oehme;J. van Slageren;J. Schulze
我们报道了第一次合成的Mn基铁磁体SixGe（1-xy）Sny晶格匹配的Ge与Sn含量高达15%。铁磁层的生长，使用蒸发的Mn和外延生长的SixGe（1-xy）Sny的相互扩散。外延层的Si与Sn的比率是固定的，以允许在Ge上的晶格匹配生长。直接在半导体上生长铁磁层的可能性为使用自对准互扩散工艺的大规模制造提供了机会。该化合物表现出铁磁相的所有样品研究。所观察到的居里温度保持在室温附近，并且随着Sn含量的增加没有显示出决定性的趋势。随着Sn含量的增加，样品的矫顽场增大，饱和磁化强度降低。这使得Mn-SixGe（1-xy）Sny成为Mn 5Ge 3的有趣替代品，作为自旋电子学应用的铁磁更硬材料。
We report on the first synthesis of a Mn based ferromagnet on SixGe (1-xy) Sny lattice matched on Ge with Sn content up to 15%. The ferromagnetic layers were grown using interdiffusion of evaporated Mn and epitaxially grown SixGe (1-xy) Sny. The Si to Sn ratio of the epitaxial layer is fixed to allow lattice matched growth on Ge. The possibility to grow the ferromagnetic layer directly on a semiconductor opens up the opportunity for large scale manufacturing using a selfaligned interdiffusion process. The compound exhibits a ferromagnetic phase for all samples studied. The observed Curie temperature remains around room temperature and shows no decisive trend with increasing Sn content. The samples show an increasing coercive field and decreasing saturation magnetization with increasing Sn content. This makes Mn-SixGe (1-xy) Sny an interesting alternative to Mn5Ge3 as a ferromagnetically harder material for spintronics applications.