The Dynamics of Microwave-Assisted Magnetic Recording

The Dynamics of Microwave-Assisted Magnetic Recording

Models of microwave-assisted magnetic recording are used to investigate the potential of the technology. With both single- and double-layer [exchange coupled composite (ECC)] media, the higher effective head field gradient led to reduced transition jitter and higher SNR in written tracks. To reduce...

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Veröffentlicht in:IEEE transactions on magnetics 2015-04, Vol.51 (4), p.1-7
Hauptverfasser: Greaves, Simon, Katayama, Takuto, Kanai, Yasushi, Muraoka, Hiroaki
Format: Artikel
Sprache:eng
Schlagworte:
Anisotropic magnetoresistance
Magnetic heads
Magnetism
Magnetization
Media
Resonant frequency
Signal to noise ratio
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Zusammenfassung:Models of microwave-assisted magnetic recording are used to investigate the potential of the technology. With both single- and double-layer [exchange coupled composite (ECC)] media, the higher effective head field gradient led to reduced transition jitter and higher SNR in written tracks. To reduce the high-frequency field to a realistic frequency range, the use of ECC media is required. However, the ECC medium design must consider interactions between the spin torque oscillator and the medium.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2014.2361751