Evidence for enhanced ferromagnetism in an iron-based nanoglass
Evidence for enhanced ferromagnetism in an iron-based nanoglass
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DOI：
10.1063/1.4818493
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发表时间：
2013-08-12
影响因子：
4
通讯作者：
Gleiter, H.
中科院分区：
文献类型：
--
作者：
Witte, R.;Feng, T.;Gleiter, H.
合成具有内部纳米结构纳米玻璃的大块非晶材料的可能性导致了另一类具有潜在改性性质的材料。在这里，证据表明，纳米玻璃模型系统Fe90Sc10表现出增强的磁性能：它表明，这种纳米玻璃（冷压玻璃纳米球制备）是一种铁磁体在环境温度下，虽然孤立的纳米球是顺磁性的。结构研究表明，它由玻璃状纳米球连接的区域与原子密度降低。铁磁性是由这种低原子密度区域的存在来解释的。(C)2013 AIP Publishing LLC.
The possibility to synthesize bulk amorphous materials with an internal nanostructure-nanoglasses-leads to yet another class of materials potentially with modified properties. Here, evidence is presented that the nanoglass model system Fe90Sc10 exhibits enhanced magnetic properties: it is shown that this nanoglass (prepared by cold compaction of glassy nanospheres) is a ferromagnet at ambient temperature although the isolated nanospheres are paramagnetic. Structural studies reveal that it consists of glassy nanospheres connected by regions with reduced atomic density. The ferromagnetism is explained by the presence of such regions of low atomic density. (C) 2013 AIP Publishing LLC.