Crystallization and magnetic properties of melt-spun neodymium-iron alloys
| Autor: | J.J. Croat |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Materials science
Amorphous metal Alloy Analytical chemistry Coercivity engineering.material Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Magnetization Nuclear magnetic resonance Magnetic shape-memory alloy Ferromagnetism law Phase (matter) engineering Crystallization |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 24:125-131 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/0304-8853(81)90004-4 |
| Popis: | The magnetic and crystallization properties of melt-spun Nd 1− x Fe x alloys are reported. By using high purity constituents and an extremely fine orifice (100–150 μm), amorphous alloys were prepared over the interval 0.4 ⩽ x ⩽ 0.8. Their magnetic properties, taken between 20–850 K in fields up to 95 kOe, are interpreted on the basis of a sperimagnetic structure; at high field the alloys from collinear ferromagnetic structures. Room temperature coercivities of the amorphous alloys are relatively low (1.5–2.0 kOe) but increase substantially at reduced temperatures; at 20 K, a maximum coercivity of 52 kOe was found for a Nd 0.4 Fe 0.6 alloy. X-ray diffraction indicates that the melt-spun alloys crystallize by the precipitation of Nd metal and an unidentified Nd-Fe phase. Changes in magnetization and coercivity during crystallization are reported. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|