Nanoscale Composition Control Applied on \(} 1}}\) FePtRh Film for Dot Patterning Using Magnetic Phase Change

Nanoscale Composition Control Applied on \(} 1}}\) FePtRh Film for Dot Patterning Using Magnetic Phase Change

A planar dot pattern was fabricated using the flat-patterning method involving nanoscale composition control. A small percentage of Fe and Pt atoms was locally diffused into an L1 0 FePtRh film by annealing, resulting in ferromagnetic dots with a diameter of 50 nm and a nonmagnetic spacing with a wi...

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Veröffentlicht in:IEEE transactions on magnetics 2014-11, Vol.50 (11), p.1-4
Hauptverfasser: Hasegawa, Takashi, Kondo, Yuji, Uebayashi, Kazuhiko, Arakawa, Akira, Ishio, Shunji
Format: Artikel
Sprache:eng
Schlagworte:
Annealing
Frequency modulation
Magnetic hysteresis
Magnetic recording
Magnetic resonance imaging
Magnetism
Metals
Nanoscale devices
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Beschreibung
Zusammenfassung:A planar dot pattern was fabricated using the flat-patterning method involving nanoscale composition control. A small percentage of Fe and Pt atoms was locally diffused into an L1 0 FePtRh film by annealing, resulting in ferromagnetic dots with a diameter of 50 nm and a nonmagnetic spacing with a width of 100 nm. Nanoscale composition profiles around the dots were analyzed by an energy dispersive X-ray detector attached to a transmission electron microscope. Only the area in which the composition crossed the ferromagnetic-nonmagnetic threshold underwent a magnetic phase change. Magnetic force microscopy revealed ferromagnetic dots with a single-domain structure in the nonmagnetic matrix.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2014.2317416