Magnetic order in amorphous (FexNd1−x)0.6B0.4 nanoparticles
| Autor: | M. Tortarolo, Roberto D. Zysler, H. Romero, H. E. Troiani |
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| Rok vydání: | 2004 |
| Předmět: |
Amorphous metal
Materials science Analytical chemistry Coercivity Condensed Matter Physics Electronic Optical and Magnetic Materials Amorphous solid Magnetization Nuclear magnetic resonance Impurity Magnetic nanoparticles Electrical and Electronic Engineering Saturation (magnetic) Superparamagnetism |
| Zdroj: | Physica B: Condensed Matter. 354:117-120 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/j.physb.2004.09.031 |
| Popis: | We present magnetisation measurements on (FexNd1−x)0.6B0.4 (0.25⩽x⩽1) amorphous nanoparticles (∼7 nm) obtained by chemical reduction. Samples were characterised by XRD, TEM and light scattering measurements. Our results show a decreasing in the saturation magnetisation and the coercivity with the Nd composition, evidencing a disorder induced by the Nd that breaks the strong exchange between the Fe atoms. An anomalous behaviour is observed at x≈0.85. We associate this behaviour to a cluster-glass order inside the particle produced for this particular concentration. |
| Databáze: | OpenAIRE |
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