摘要
A tetragonal phase with a = 9.778 Å and c = 11.516 Å is formed in the Nd0.33(Fe0.75Al0.25)0.67 alloy after melt spinning and short period annealing at 873 K. The tetragonal phase is probably metastable and transforms slowly into the stable δ-Nd3Fe7-xAlx phase during heat treatment at 873 K. This phase is antiferromagnetic with a Néel temperature of 260 ± 5 K. Metamagnetism is observed at a temperature of 140 K or below. The magnetic properties have been characterized using a vibrating sample magnetometer and Mössbauer spectroscopy. Magneto-resistivity of up to 7.2% is accompanied by metamagnetism. At room temperature, 1% of the magneto-resistivity is measured in the paramagnetic state.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 10557-10566 |
| 页数 | 10 |
| 期刊 | Journal of Physics Condensed Matter |
| 卷 | 11 |
| 期 | 50 |
| DOI | |
| 出版状态 | 已出版 - 20 12月 1999 |
| 已对外发布 | 是 |
| 活动 | Proceedings of the CECAM Workshop on Effective Interactions and Phase Transitions in Colloidal Suspensions - Lyon, 法国 期限: 28 6月 1999 → 30 6月 1999 |
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