التفاصيل البيبلوغرافية
| العنوان: |
Synthesis and magnetic properties of self-organized FeRh nanoparticles. |
| المؤلفون: |
Ko, Hnin Yu Yu, Suzuki, Takao |
| المصدر: |
Journal of Applied Physics; 5/1/2007, Vol. 101 Issue 9, p09J103, 3p, 1 Diagram, 3 Graphs |
| مصطلحات موضوعية: |
MAGNETIC properties, IRON-rhodium alloys, NANOPARTICLES, HIGH resolution electron microscopy, TRANSMISSION electron microscopy, X-ray diffraction, ANNEALING of metals, PHASE transitions |
| مستخلص: |
Nanoparticles with various compositions of Fe–Rh have been fabricated by a solution phase chemical method and their magnetic properties characterized. After refining and size selection, the average particle size is about 2–5 nm by high-resolution transmission electron microscopy observation. From x-ray diffraction results, as-deposited FeRh nanopaticles reveal a typical chemically disordered fcc structure which can be transformed into CsCl-type structure through thermal annealing. Under selected annealing conditions, the coercivities, Hc, for FeRh nanoparticles measured at room temperature are increased, compared with that of their as-deposited states. This increasement in Hc is due to the crystallization of CsCl-type structure after annealing. Nanoparticles of Fe36Rh64 and Fe38Rh62 annealed at 600 °C for 6 h show the presence of the magnetic phase transitions, while those of Fe75Rh25 particles did not exhibit such a transition. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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