Evolution of magnetism in Hf–Fe metallic glasses
| Autor: | Ž. Marohnić, Ramir Ristić, Emil Babić, Krešo Zadro, Damir Pajić, Đuro Drobac |
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| Přispěvatelé: | Gorria, Pedro, Blanco, Jesus A |
| Rok vydání: | 2012 |
| Předmět: |
Metallic glasses
Phase diagrams Magnetic measurement Amorphous metal Materials science Condensed matter physics Magnetism Quenching Mechanical Engineering Metals and Alloys Magnetic susceptibility Paramagnetism Magnetization Magnetic shape-memory alloy Ferromagnetism Mechanics of Materials Materials Chemistry Superparamagnetism |
| Zdroj: | Journal of Alloys and Compounds. 536:S370-S373 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2011.12.085 |
| Popis: | We have measured the magnetization and ac susceptibility of Hf 100− x Fe x (20 ≤ x ≤ 90) metallic glasses in the temperature range 1.5–300 K and magnetic fields up to 5.5 T. For 25 ≤ x ≤ 43 the magnetic susceptibility increases rapidly with x due to the onset of magnetic correlations in the vicinity of the transition into the ferromagnetic state, x c ∼50. However, for 35 ≤ x ≤ 43 the alloys consist of self-assembled magnetic nanoclusters embedded within a paramagnetic matrix. These clusters grow rapidly with increasing x . Thus, Hf–Fe glassy alloys evolve from the superconducting through superparamagnetic to ferromagnetic state with increasing Fe-content. The results are compared with those for Zr–Fe glassy alloys. |
| Databáze: | OpenAIRE |
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