Mossbauer Study of Nd-Fe-Al Nanocomposites

机译：ND-Fe-Al纳米复合材料的Mossbauer研究

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The effects of the cooling rate on the microstructure and magnetic properties of the melt-spun Nd_(60)Fe_(30)Al_(10) alloys are investigated by Mossbauer Effect (ME) Spectroscopy and magnetic hysteresis loops measurements at different temperatures. It is found that the hard magnetic properties of these alloys are likely to be related to the presence of clusters of a metastable crystalline μ-type phase. It is observed that as the cooling rate increases, the amount of this magnetic μ-like phase component decreases in the benefit of an amorphous Nd-rich phase. This phase has an iron concentration, which increases with increasing the wheel speed, is paramagnetic at room temperature and becomes superparamagnetic below approximately 50 K and 100 K for slow and high cooling rates, respectively.

机译：冷却速率对熔喷Nd_（60）Fe_（60）Al_（30）Al_（10）合金的微观结构和磁性的影响由Mossbauer效应（ME）光谱和磁滞回报在不同温度下测量。发现这些合金的硬磁性可能与亚稳态结晶μ型相簇的存在有关。观察到，随着冷却速率的增加，该磁性μ样相组分的量随着无定形ND的相的益处而降低。该相具有铁浓度，该铁浓度随着车轮速度的增加而增加，在室温下是顺磁性，分别变得高于约50k和100k的超顺磁性，分别用于缓慢和高冷却速率。

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《International symposium on metastable, mechanically alloyed and nanocrstalline materials》|2004年||共6页
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作者
A.F. Cabrera; C.E. Rodriguez Torres; F.H. Sanchez; O.V. Billoni; S.E. Urreta; L.M. Fabietti; Journal of Metastable and Nanocrystalline Materials v.20-21;
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中图分类材料结构及物理性质;
关键词
amorphous RE-TM; hard magnetic properties; melt spinning; mossbauer spectroscopy;

机译：无定形的RE-TM;硬磁性;熔体纺丝;莫斯堡光谱;

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4. Mossbauer Study of Nd-Fe-Al Nanocomposites [C] . A.F. Cabrera, C.E. Rodriguez Torres, F.H. Sanchez, International symposium on metastable, mechanically alloyed and nanocrstalline materials . 2004

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Mossbauer Study of Nd-Fe-Al Nanocomposites

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